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OfflineGod Stamet
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Registered: 07/01/12
Posts: 774
Last seen: 9 years, 6 months
your thoughts or suggestions on my laminar flow hood project
    #17810133 - 02/15/13 09:13 PM (11 years, 3 months ago)



here is where i am with it. made out of aluminum. behind the alumninum looking blinds is gonna be a 120 volt uv light made for a whole house. in front is going to be a 2x2 HEPA. obviously blower in the back chambered into the uv light then through the HEPA. any ideas or scrutiny from anvanced cultivators is appreciated because i won't finish it till monday. thanks guys, it's my first time building a flow hood so my feelings won't be hurt if you see a design flaw lol.


--------------------
I have caught the Mycology bug! Not just here for the ride, i'm here for life.

How I do my bulk substrate

just another mushroom capsule TEK

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OfflineRogerRabbitM
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Re: your thoughts or suggestions on my laminar flow hood project [Re: God Stamet]
    #17811719 - 02/16/13 04:44 AM (11 years, 3 months ago)

As long as it's sealed up properly it should work.  There is no reason to put a uv light in the plenum.  It's doubtful it could do any good with the air flowing that much anyway, but it's not needed with a laminar flow hood.
RR


--------------------
Download Let's Grow Mushrooms



semper in excretia sumus solim profundum variat

"I've never had a failed experiment.  I've only discovered 10,000 methods which do not work."
Thomas Edison

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OfflineFruitbuddy
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Re: your thoughts or suggestions on my laminar flow hood project [Re: RogerRabbit]
    #17811843 - 02/16/13 06:09 AM (11 years, 3 months ago)

UV-C lights can be very helpful in flowhoods, though not for sterilizing the air, but for surface sterilization of the work area, when it's not in use. it's often used in laminar flow cabinets, used for tissue culture.



when used in this manner, there must be protection, like in this picture, a glass window (which all laminar flow cabinets provide). normal glass filters out most uv-c light. though one should still leave the room as long as the light is on, just to be sure.

surface sterilization with uv-c is pretty effective, and there isn't very long exposure time needed.

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OfflineGod Stamet
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Re: your thoughts or suggestions on my laminar flow hood project [Re: Fruitbuddy]
    #17811936 - 02/16/13 07:04 AM (11 years, 3 months ago)

well that suckss RR! the point of the blinds is to keep the light out completely. i don't want to see a spec of light coming through or else i might call off the whole uv part. also the blinds are going to left, right,center to kind of beat down any microns DNA before passing through the flow hood.

i kind of figured the uv light was overkill, but seeing i spent 142$ on it and included it in my design i may as well include it. i matched a filter to a blower according to stamets spec in his book, did you guys have to adjust your blower speeds at all to get them just right? i'm kind of expecting to have to because of the blinds design. i'll make sure to post the finished product,failure or not. thanks guys.


--------------------
I have caught the Mycology bug! Not just here for the ride, i'm here for life.

How I do my bulk substrate

just another mushroom capsule TEK

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OfflineFruitbuddy
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Re: your thoughts or suggestions on my laminar flow hood project [Re: God Stamet]
    #17812001 - 02/16/13 07:43 AM (11 years, 3 months ago)

one thing i forgot: uv light can degrade a lot of materials. i guess you don't want concentrated uv-c to shine on your filter for a longer period of time.

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OfflineGod Stamet
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Re: your thoughts or suggestions on my laminar flow hood project [Re: Fruitbuddy]
    #17812021 - 02/16/13 07:55 AM (11 years, 3 months ago)

aaaaarggggggg! i might have made the wrong decision with this whole uv thing. i'm gonna give it a lot of thought and make a decision monday wether or not to include it. thank's fruitbuddy.


--------------------
I have caught the Mycology bug! Not just here for the ride, i'm here for life.

How I do my bulk substrate

just another mushroom capsule TEK

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OfflineRogerRabbitM
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Re: your thoughts or suggestions on my laminar flow hood project [Re: God Stamet]
    #17812050 - 02/16/13 08:12 AM (11 years, 3 months ago)

We've known for years that UV has no place in mycology.  You're not re-inventing the wheel, but rather using a square wheel that has already been disproved.  I own a commercial mushroom farm and know and deal with dozens of others in the business and not a single one of them uses UV.  Disregard bad advice from other noobs pretending to know what actual mycology labs do and use.
RR


--------------------
Download Let's Grow Mushrooms



semper in excretia sumus solim profundum variat

"I've never had a failed experiment.  I've only discovered 10,000 methods which do not work."
Thomas Edison

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OfflineGod Stamet
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Re: your thoughts or suggestions on my laminar flow hood project [Re: RogerRabbit]
    #17812070 - 02/16/13 08:21 AM (11 years, 3 months ago)

how do i use a uv light still after that statement? i guess i'll b trying to take it back. thaks RR. i gotta quit with the overkill.


--------------------
I have caught the Mycology bug! Not just here for the ride, i'm here for life.

How I do my bulk substrate

just another mushroom capsule TEK

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OfflineGod Stamet
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Re: your thoughts or suggestions on my laminar flow hood project [Re: God Stamet]
    #17812163 - 02/16/13 08:55 AM (11 years, 3 months ago)

since there's no decision to think about i have a new plan. keep it simple, and go with what works. since i didn't weld the blind design, i'm scrapping it along with the uv light which i'll be taking back to get my 142 dollars back. it will resemble any normal flow hood. i'm gonna finish welding the aluminum today(which is a complete bitch!!) and get the hepa filter today. should have her air tight by the end of the day.

although i feel like a bit of a bone head after consulting with you guys about the whole uv light idea i'm very glad i did before i built this puppy to completion. thanks again and i'll post updates as i continue my build. here's the link of the grower that gave me the idea of the uv light, he really is a great cultivator, but he was obviously wrong here. and i wouldn't be surprised to find out he got cancer because he built a window for the uv light and you can clearly see light coming through his filter in one of his pics!!!!!http://www.shroomery.org/forums/showflat.php/Number/11120537#11120537


--------------------
I have caught the Mycology bug! Not just here for the ride, i'm here for life.

How I do my bulk substrate

just another mushroom capsule TEK

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OfflineRogerRabbitM
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Re: your thoughts or suggestions on my laminar flow hood project [Re: God Stamet]
    #17812191 - 02/16/13 09:04 AM (11 years, 3 months ago)

Using TIG?

Most guys use poly coated plywood since we often spray our labs with bleach solution.  Bleach and metal, especially Aluminum don't do well together.
RR


--------------------
Download Let's Grow Mushrooms



semper in excretia sumus solim profundum variat

"I've never had a failed experiment.  I've only discovered 10,000 methods which do not work."
Thomas Edison

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OfflineGod Stamet
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Re: your thoughts or suggestions on my laminar flow hood project [Re: RogerRabbit]
    #17812485 - 02/16/13 10:28 AM (11 years, 3 months ago)

yes TIG. i've always cleaned my areas with iso alchohol. bleach and me don't do well together lol. hopefully alchohol will be sufficient enough because aluminum is what i got.


--------------------
I have caught the Mycology bug! Not just here for the ride, i'm here for life.

How I do my bulk substrate

just another mushroom capsule TEK

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OfflineLD50
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Re: your thoughts or suggestions on my laminar flow hood project [Re: God Stamet]
    #17825363 - 02/18/13 03:30 PM (11 years, 2 months ago)

I looks cool and hell if your like me you must enjoy engineering things but this is way overkill... You could have had a sweet setup for low cost. I would fall back to a KISS guideline.

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Offlinedonrjuan
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Re: your thoughts or suggestions on my laminar flow hood project [Re: RogerRabbit]
    #17829062 - 02/19/13 07:36 AM (11 years, 2 months ago)

Can you elaborate on "poly coated" RR? Thanks as always.

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OfflineGod Stamet
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Re: your thoughts or suggestions on my laminar flow hood project [Re: donrjuan]
    #17829835 - 02/19/13 11:18 AM (11 years, 2 months ago)

so home depot fucked me. an order i thought to be getting yesterday isn't supposed to be here till mid fucking march! aaaarrrrggggg. 2 hours of talking to idiots about a simple order just to cancel it. the good news is i ordered a way better quality filter. here's a link where i am purchasing from. the specs are 18x18x5-7/8 99.99 HEPA metal frame. i would have ordered from perfecti but i have to have an 18x18 because that's what i built my project for. fucking home depot. let me know what you guys think of the filter. gonna take 20 days to get here so i'm bummed

http://www.filtera-b2b.com/businessfilters/hepa.htm#99.99metal


--------------------
I have caught the Mycology bug! Not just here for the ride, i'm here for life.

How I do my bulk substrate

just another mushroom capsule TEK

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Invisiblelipa

Registered: 07/24/07
Posts: 2,684
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Re: your thoughts or suggestions on my laminar flow hood project [Re: God Stamet]
    #17831088 - 02/19/13 03:51 PM (11 years, 2 months ago)

Quote:

God Stamet said:
yes TIG. i've always cleaned my areas with iso alchohol. bleach and me don't do well together lol. hopefully alchohol will be sufficient enough because aluminum is what i got.




You can also use lysol multi purpose disinfectant cleaner as a sanitizer. I don't use bleach in my lab because it can cause fruitbody abnormalities and it stinks like shit . It is ok to use in grow rooms as long as  you clear and rinse the room before using. I use alcohol only to flash my needles and scalpels in front of the hood and i use a covered container for that. Another sanitizer is chlorhexidine available through vet supply online. I switch between the two.

Lipa

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Offlinedonrjuan
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Re: your thoughts or suggestions on my laminar flow hood project [Re: God Stamet]
    #17834284 - 02/20/13 05:43 AM (11 years, 2 months ago)

What did you order from Home Depot?

If you ordered a 99.99% filter from Fitera B2B you are fine. They make awesome filters and mine arrived in 1/2 the time they quoted.

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OfflineGod Stamet
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Re: your thoughts or suggestions on my laminar flow hood project [Re: donrjuan]
    #17834402 - 02/20/13 06:46 AM (11 years, 2 months ago)

Quote:

donrjuan said:
What did you order from Home Depot?

If you ordered a 99.99% filter from Fitera B2B you are fine. They make awesome filters and mine arrived in 1/2 the time they quoted.




here's the one i ordered from depot. i canceled the order thank god, filter seems awesome.glad to here it took half the time they told you because they told me 20 days. also did they question you what you were gonna do with it? they did to me, not that i cared when the chick asked i said i'm building a laminar flow hood lol.http://www.homedepot.com/h_d1/N-5yc1v/R-203051809/h_d2/ProductDisplay?catalogId=10053&langId=-1&keyword=hepa+filter&storeId=10051

i think this filter doesn't hold a candle to the filtera one so it worked out.just a bit of a headache in the process


--------------------
I have caught the Mycology bug! Not just here for the ride, i'm here for life.

How I do my bulk substrate

just another mushroom capsule TEK

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Offlinedonrjuan
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Re: your thoughts or suggestions on my laminar flow hood project [Re: God Stamet]
    #17837885 - 02/20/13 07:20 PM (11 years, 2 months ago)

You did exactly the right thing. That filter from depot is not intended for laminar flow, notice there are no aluminum pleats.

The reason for the questions from Filtera is due to numskulls buying them and putting them in standard furnace systems. They are kinda asking for your protection, not to be nosy.

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OfflineGod Stamet
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Re: your thoughts or suggestions on my laminar flow hood project [Re: donrjuan]
    #17838474 - 02/20/13 09:08 PM (11 years, 2 months ago)

Quote:

donrjuan said:
You did exactly the right thing. That filter from depot is not intended for laminar flow, notice there are no aluminum pleats.

The reason for the questions from Filtera is due to numskulls buying them and putting them in standard furnace systems. They are kinda asking for your protection, not to be nosy.





that's exactly why i thought she asked lol. some dumb shit might try to force it in there furnace lol. anyways i'll post pics when everything is all said and done


--------------------
I have caught the Mycology bug! Not just here for the ride, i'm here for life.

How I do my bulk substrate

just another mushroom capsule TEK

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OfflineGod Stamet
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Re: your thoughts or suggestions on my laminar flow hood project [Re: God Stamet]
    #17926782 - 03/08/13 09:55 PM (11 years, 2 months ago)

i got my 18x18x5-7/8 metal frame hepa today. it's very nice, i'm glad i waited.



RR, do you think it would be ok to use this smaller HEPA 18x18 version as the pre-filter for the back where the fan sucks air in?



i got my money back for it but they still sent it. now i'm just wondering if i can use it or not. don't see any reason why it shouldn't work but since i won't start back on my build till monday i figured i'd ask. obviously it's overkill but i got it for free so why not?


--------------------
I have caught the Mycology bug! Not just here for the ride, i'm here for life.

How I do my bulk substrate

just another mushroom capsule TEK

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OfflineRogerRabbitM
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Re: your thoughts or suggestions on my laminar flow hood project [Re: God Stamet]
    #17926872 - 03/08/13 10:16 PM (11 years, 2 months ago)

If it's not too resistive you could use it for a prefilter but you'd be stuck using that size from now on if you built the prefilter housing to hold it.  You'll change the prefilter every 100 hours or so of operation.
RR


--------------------
Download Let's Grow Mushrooms



semper in excretia sumus solim profundum variat

"I've never had a failed experiment.  I've only discovered 10,000 methods which do not work."
Thomas Edison

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Offlinet3chnobily
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Re: your thoughts or suggestions on my laminar flow hood project [Re: RogerRabbit]
    #17928048 - 03/09/13 06:38 AM (11 years, 2 months ago)

as long as your blower can handle the combined static pressure

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OfflineGod Stamet
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Re: your thoughts or suggestions on my laminar flow hood project [Re: RogerRabbit]
    #17928060 - 03/09/13 06:45 AM (11 years, 2 months ago)

Quote:

RogerRabbit said:
If it's not too resistive you could use it for a prefilter but you'd be stuck using that size from now on if you built the prefilter housing to hold it.  You'll change the prefilter every 100 hours or so of operation.
RR




i was trying to figure out a way to swap it with a normal pre filter. if you're supposed to change them every 30 to 50 times you use the flow hood then i'd better just go with a simple cheap easy to find pre filter. especially because i have a cat!

thanks RR


--------------------
I have caught the Mycology bug! Not just here for the ride, i'm here for life.

How I do my bulk substrate

just another mushroom capsule TEK

Edited by God Stamet (03/09/13 06:46 AM)

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Invisiblefastfred
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Re: your thoughts or suggestions on my laminar flow hood project [Re: RogerRabbit]
    #18065690 - 04/06/13 02:50 AM (11 years, 1 month ago)

Quote:

RogerRabbit said:
We've known for years that UV has no place in mycology.  You're not re-inventing the wheel, but rather using a square wheel that has already been disproved.  I own a commercial mushroom farm and know and deal with dozens of others in the business and not a single one of them uses UV.  Disregard bad advice from other noobs pretending to know what actual mycology labs do and use.
RR




Still haven't been in a real lab I see RR.  UV is standard in a lot of flow hoods and almost every sterile transfer room.

UV is so cheap and easy there's just no good reason not to use it.  Anyone interested can google UV bulbs.  Look for a standard size one and run it off a normal (proper wattage) ballast.

UV is no magic bullet, but it's very effective for surface sterilization.


--------------------
It drinks the alcohol and abstains from the weed or else it gets the hose again. -Chemy

The difference between the substances doesn't matter. This is a war on consciousness, on our right to the very essence of what we are. With no control over that, we have no need to speak of freedom or a free society. -fireseed

"If we are going to have a war on marijuana, the least we can do is pull the sick and the dying off the battlefield." -Neal Levine (MPP)

I find the whole "my drug should be legal but yours should be illegal" mindset disgusting and hypocritical. It's what George Bush and company do when they drink a cocktail and debate the best way to imprison marijuana users. -Diploid

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OfflinePussyFart
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Re: your thoughts or suggestions on my laminar flow hood project [Re: fastfred]
    #18065877 - 04/06/13 05:11 AM (11 years, 1 month ago)


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Invisiblefastfred
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Re: your thoughts or suggestions on my laminar flow hood project [Re: PussyFart]
    #18067662 - 04/06/13 03:13 PM (11 years, 1 month ago)

UV burns are not fun.  These things are NOT tanning lamps, you won't get a tan from them just a nasty burn.

Most people I know only F-up once with UV.  Once you have a good burn and your eyes feel like sand the lesson is learned.  UV burning your eyeballs is not normally repeated.

Again, UV is for when you are NOT in the room.  But any plastic will block UV, so if you have a plexiglass front on your flow hood you can use one while working, it's just generally not done since there's not much point.


-FF


--------------------
It drinks the alcohol and abstains from the weed or else it gets the hose again. -Chemy

The difference between the substances doesn't matter. This is a war on consciousness, on our right to the very essence of what we are. With no control over that, we have no need to speak of freedom or a free society. -fireseed

"If we are going to have a war on marijuana, the least we can do is pull the sick and the dying off the battlefield." -Neal Levine (MPP)

I find the whole "my drug should be legal but yours should be illegal" mindset disgusting and hypocritical. It's what George Bush and company do when they drink a cocktail and debate the best way to imprison marijuana users. -Diploid

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OfflinePussyFart
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Re: your thoughts or suggestions on my laminar flow hood project [Re: fastfred]
    #18067729 - 04/06/13 03:27 PM (11 years, 1 month ago)

Quote:

fastfred said:
Again, UV is for when you are NOT in the room.  But any plastic will block UV,



"""A University lab employee received skin and eye burns while using an acrylic plastic shield for protection against UV. The lab did not realize that the shield had not been manufactured for this use and was not rated for protection against UV light. Please check your safety equipment to ensure that it is rated for the wavelength in use."""
http://www.ehs.washington.edu/rsononion/uvlight.shtm

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Invisiblefastfred
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Re: your thoughts or suggestions on my laminar flow hood project [Re: PussyFart]
    #18067887 - 04/06/13 04:08 PM (11 years, 1 month ago)

Acrylic/plexiglas is opaque to UV.  Doesn't really matter if it's "manufactured for this use" or "rated for protection against UV light".

That little low power light box didn't give anybody "skin and eye burns", unless they stared at it for an extended period of time without being behind that shield.

In any case, don't stare at UV light without adequate protection.  A decent thickness plexiglas and glasses should be considered the minimum protection for anything more than several minutes.

IME the 25 watt UV tubes are about twice as fast as the sun at burning you, and the burn is easily twice as unpleasant.  30 minutes can give you an unpleasant burn.  Even with eye protection you want to limit your exposure to less than 5-10 minutes a day if you are light skinned.

It's very easy to get burned if you use UV improperly, but very hard to have any risk if you do use it properly.

I should probably quit pitching UV since it seems that nobody believes me until they get that first burn, or else they're too much of a paranoid to use it in the first place.

One guy I helped out decided he liked the UV idea so much that he bought 8-10 UV tubes and had his damn room lit up like the sun with them.  I told him many times to turn the damn things off when he was in there, or limit his time AND use sunscreen and eyewear.  But, all excited, he told me one day he knew the UV was working great because it burned the hell out of him and his eyes felt like sandpaper for a handful of days after he ignored my warning.

There's no reason not to have UV in your setup.  Buy a cheap under cabinet light fixture ($10), hook up a properly rated ballast ($10-25), and slap in a UV tube ($12).  It's very cheap and easy if you go to someplace like 1000bulbs.com and get the properly sized tubes.


-FF


--------------------
It drinks the alcohol and abstains from the weed or else it gets the hose again. -Chemy

The difference between the substances doesn't matter. This is a war on consciousness, on our right to the very essence of what we are. With no control over that, we have no need to speak of freedom or a free society. -fireseed

"If we are going to have a war on marijuana, the least we can do is pull the sick and the dying off the battlefield." -Neal Levine (MPP)

I find the whole "my drug should be legal but yours should be illegal" mindset disgusting and hypocritical. It's what George Bush and company do when they drink a cocktail and debate the best way to imprison marijuana users. -Diploid

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OfflinePussyFart
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Re: your thoughts or suggestions on my laminar flow hood project [Re: fastfred]
    #18067931 - 04/06/13 04:22 PM (11 years, 1 month ago)

Quote:

fastfred said:
There's no reason not to have UV in your setup. 



Other than it is just not needed, because people have 99-100% success without it.

Shit, I don't even have a flow hood, all I use is a SAB/GB, and I have a 99-100% success rate.

So like was said above, if you have the money and resources, go for it, but you can have great success without it, meaning it is just not needed.

If the fact that it is just not needed is not a good enough reason for you, I fear no reason will be good enough.

Edited by PussyFart (04/06/13 04:23 PM)

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Invisiblefastfred
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Re: your thoughts or suggestions on my laminar flow hood project [Re: PussyFart]
    #18068150 - 04/06/13 05:17 PM (11 years, 1 month ago)

Pretty weak logic there.  I guess we should throw out all our tools and do everything with a toothpick, drinking glasses, and tinfoil.  You can have great success without anything else, so give up all that other useless crap.

If you don't see the point of $30 devices that keep all your surfaces and your air sterilized 24/7 so that they're always sterile and ready.... well fine.  But it's kind of annoying when a hypocrite keeps arguing about something they know little or nothing about.  Logically flawed and hypocritical arguments against a tech that is already standard practice across the scientific community is some pretty weak sauce.

If you have a sterile transfer room you really have no other option.  Either every lab tech that needs 5 minutes in the room has to spend half an hour wiping it down and still not get it half as clean or you plug in a UV light that's always on when the room is empty.  You can always spend a fortune on HEPA filters or use annoying and limiting things like glove boxes, but for the price and utility UV is far cheaper and easier.

The only real holdup in bringing wider use of UV to amateurs is getting people to learn how to do it cheap.  If you can use the internet and install a light fixture you can have cheap UV!


-FF


--------------------
It drinks the alcohol and abstains from the weed or else it gets the hose again. -Chemy

The difference between the substances doesn't matter. This is a war on consciousness, on our right to the very essence of what we are. With no control over that, we have no need to speak of freedom or a free society. -fireseed

"If we are going to have a war on marijuana, the least we can do is pull the sick and the dying off the battlefield." -Neal Levine (MPP)

I find the whole "my drug should be legal but yours should be illegal" mindset disgusting and hypocritical. It's what George Bush and company do when they drink a cocktail and debate the best way to imprison marijuana users. -Diploid

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Re: your thoughts or suggestions on my laminar flow hood project [Re: fastfred]
    #18068216 - 04/06/13 05:32 PM (11 years, 1 month ago)

Weak logic?

If it's not broke, don't fix it is not weak logic.

To each his own...I'll stick with my SAB, it cannot possibly work any better than it's working right now, nor would I want it to.

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Re: your thoughts or suggestions on my laminar flow hood project [Re: PussyFart]
    #18068731 - 04/06/13 07:35 PM (11 years, 1 month ago)

> If it's not broke, don't fix it is not weak logic.

Yeah, it's as weak as it gets, and I already explained why.

It's hypocritical since you're not following your own logic, and just plain wrong on it's face.  The model T worked fine, so we should all be driving model Ts, right?  Morse code over telegraph wires worked just fine for communication, so you're going to throw out your cell phone right?

You also just plain don't make any sense.  The use of UV in microbiology has been around far longer than any techniques you use, so the UV wasn't broke... why did you fix it?

That's the problem with using foolish little quips as a substitute for logic and analysis.  We're not down at the bar debating which beer is the best, so breaking out lines from "Farmer Joe's Famous Quotes" isn't going to get you anywhere.


-FF


--------------------
It drinks the alcohol and abstains from the weed or else it gets the hose again. -Chemy

The difference between the substances doesn't matter. This is a war on consciousness, on our right to the very essence of what we are. With no control over that, we have no need to speak of freedom or a free society. -fireseed

"If we are going to have a war on marijuana, the least we can do is pull the sick and the dying off the battlefield." -Neal Levine (MPP)

I find the whole "my drug should be legal but yours should be illegal" mindset disgusting and hypocritical. It's what George Bush and company do when they drink a cocktail and debate the best way to imprison marijuana users. -Diploid

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Re: your thoughts or suggestions on my laminar flow hood project [Re: fastfred]
    #18068819 - 04/06/13 07:48 PM (11 years, 1 month ago)

Your comparing a model T to modern cars....makes no sense. The model T is not what I would call "perfecttion", but what car is perfect?

I will tell you what is perfect, 100% success, that is perfect.

If you are getting 99-100% success without a flow hood or UV lights, just with a SAB, how much is really left to improve on?

I really do not want this to become a heated argument, but saying UV lights will help, when someone is already getting the best success rate possible, makes no sense.

If a noob reads this thread, will he end up investing in a UV light? Me thinks not.

Because a $15 SAB will work just as good, with no further investments needed to have great success.

All that would be needed besides a SAB/Flowhood, is great sterile technique, and using a UV light will not fix that.

Where is the logic in buying a light that will not improve a damn thing?

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Re: your thoughts or suggestions on my laminar flow hood project [Re: PussyFart]
    #18069342 - 04/06/13 09:25 PM (11 years, 1 month ago)

So a UV light in my sab. Got it Notahacker, got it :wink:
I'll spread the word

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Re: your thoughts or suggestions on my laminar flow hood project [Re: Roman08640]
    #18069592 - 04/06/13 10:28 PM (11 years, 1 month ago)

Hopefully you're not using SAB, it's a poor choice of media IME.

A UV light is to sterilize the surfaces and air, it really has nothing to do with your personal success rates.  If you only need to use the most ghetto methods to do the few basic techniques you use then great.  Others may live in areas with higher contam loads, want to do more advanced techniques, or simply want to reduce their efforts and consumption of chemicals.  To many people $12 for a UV bulb is not a lot of money.  Others may be smart enough to see that the time and chem savings will quickly pay that investment back.

This is advanced mycology, not ghetto teks for the cheap and lazy, so I don't see why you feel the need to rail on in your lost arguments.  I've been gone from this forum for a few years, so apologies if I have been too argumentative, but I have only your current flawed arguments to judge you by.


-FF


--------------------
It drinks the alcohol and abstains from the weed or else it gets the hose again. -Chemy

The difference between the substances doesn't matter. This is a war on consciousness, on our right to the very essence of what we are. With no control over that, we have no need to speak of freedom or a free society. -fireseed

"If we are going to have a war on marijuana, the least we can do is pull the sick and the dying off the battlefield." -Neal Levine (MPP)

I find the whole "my drug should be legal but yours should be illegal" mindset disgusting and hypocritical. It's what George Bush and company do when they drink a cocktail and debate the best way to imprison marijuana users. -Diploid

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Re: your thoughts or suggestions on my laminar flow hood project [Re: fastfred]
    #18069703 - 04/06/13 10:56 PM (11 years, 1 month ago)

Call it ghetto if it makes you feel better, there are a lot of ghetto TCs around here then.

Call it italian fucking french dressing for all I care, success is success, I just choose to invest the least amount possible, to get there.

You call it ghetto, I call it economical common sense.

:peace:

Edited by PussyFart (04/06/13 10:59 PM)

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Re: your thoughts or suggestions on my laminar flow hood project [Re: PussyFart]
    #18069770 - 04/06/13 11:16 PM (11 years, 1 month ago)

> You call it ghetto, I call it economical common sense.

I'm just mainly calling this poor logic.
How many $5 cans of Lysol does it take to equal a $30 UV lamp?

If you think it's overkill, then just say so and leave it at that.  That's a perfectly reasonable argument.  Everything else you've said just faulty reasoning.


-FF

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Re: your thoughts or suggestions on my laminar flow hood project [Re: PussyFart]
    #18069866 - 04/06/13 11:31 PM (11 years, 1 month ago)

Quote:

fastfred said:
I'm just mainly calling this poor logic.
How many $5 cans of Lysol does it take to equal a $30 UV lamp?

If you think it's overkill, then just say so and leave it at that.  That's a perfectly reasonable argument.  Everything else you've said just faulty reasoning.




I do not use lysol, that shit is expensive, I do however use 70% alcohol, soap and water.

My main area that I work in is my bedroom. Unfortunately this is where I spend 80% of my life, so running a UV when I am not doing mycology poses serious health risks to me.

The alcohol is to clean WHILE I am working, it does not get used when I am not working.

Now just because you have this UV light, this will not mean that lysol/alcohol is not needed, you just need less of it.

Unless you assume the UV light(which is off when you are working remember) is going to somehow sanitize your gloved hands, jars, and immediate work area, and keep it sanitized while you are working.

I have said it is overkill, it was the first thing I said in this thread other than quotes, and it has been said plenty of times, but only now are you willing to accept it.

Quote:

Notahacker420 said:
Other than it is just not needed, because people have 99-100% success without it.



^^^^

That means it is overkill.

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Re: your thoughts or suggestions on my laminar flow hood project [Re: fastfred]
    #18069887 - 04/06/13 11:34 PM (11 years, 1 month ago)

To make this thread more useful, here is my quick guide from memory on getting your UV going...

Google "t8 uv germicidal lamp".  Click on shopping, that should give you any number of sites.  I suggest the one that is the cheapest source, around $6.88.  You want one that is G15T8.  This should work in a F15T8 light fixture.

Go to your local MegaMart or hardware store.  Buy an 18" fluorescent light fixture for one 15W bulb. Under-Cabinet types will usually have a switch on the cord or fixture and be cheaper.  Strip light type will be a little more and probably not have a switch, but they will be metal (withstands/reflects UV better).  They are about $8 and $14, respectively.  Make sure to take any plastic cover or diffuser off.

Now you've got a 15W, 18" germicidal lamp for just under $15.00!

Remember you're not trying to replace all your good sterile technique, such as swabbing down surfaces with disinfectant.  But "LYSOL Professional Brand III Disinfectant" is $9.99 at my local MegaMart, and you can certainly reduce your disinfectant consumption significantly by letting UV do the work.


-FF


--------------------
It drinks the alcohol and abstains from the weed or else it gets the hose again. -Chemy

The difference between the substances doesn't matter. This is a war on consciousness, on our right to the very essence of what we are. With no control over that, we have no need to speak of freedom or a free society. -fireseed

"If we are going to have a war on marijuana, the least we can do is pull the sick and the dying off the battlefield." -Neal Levine (MPP)

I find the whole "my drug should be legal but yours should be illegal" mindset disgusting and hypocritical. It's what George Bush and company do when they drink a cocktail and debate the best way to imprison marijuana users. -Diploid

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Re: your thoughts or suggestions on my laminar flow hood project [Re: fastfred]
    #18070849 - 04/07/13 07:42 AM (11 years, 1 month ago)

Despite the bickering this thread contains some good info on UV.  Thanks Fastfred.  Won't be installing one in my flowhood (overkill) But I think they have real potential as sanitizers for humidibuckets.  Got any experience with sterilizing liquids/fog with UV?

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Re: your thoughts or suggestions on my laminar flow hood project [Re: t3chnobily]
    #18072869 - 04/07/13 04:10 PM (11 years, 1 month ago)

I would be careful with liquids or fog.  It wouldn't be too hard to get a short or shock from the high voltages involved with fluorescent lights.

For $15 it's worth having one around even if you just play around with it now and again.

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Re: your thoughts or suggestions on my laminar flow hood project [Re: fastfred]
    #18075338 - 04/08/13 03:42 AM (11 years, 1 month ago)

Quote:

But "LYSOL Professional Brand III Disinfectant" is $9.99 at my local MegaMart, and you can certainly reduce your disinfectant consumption significantly by letting UV do the work.



How? What do you not need to disinfect once you have the lamp?


--------------------

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Re: your thoughts or suggestions on my laminar flow hood project [Re: Kizzle]
    #18075424 - 04/08/13 04:58 AM (11 years, 1 month ago)

Quote:

How? What do you not need to disinfect once you have the lamp?




You still have to wipe things down and use decent sterile technique.  Just imagine that UV light slowly cooking everything alive in it's light.  It's not going to get anything that's shadowed, or penetrate through plastic.

Using 1:10 bleach solution is dirt cheap and works the best.  I just mentioned lysol because people use it and it leaves a residue.

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Re: your thoughts or suggestions on my laminar flow hood project [Re: fastfred]
    #18075459 - 04/08/13 05:42 AM (11 years, 1 month ago)

So I googled "uv light penetrate plastic" and found this.

""""Short wave ultraviolet light (100 to 300 nm) is used to kill bacteria, hasten chemical reactions (as a catalyst), and is also valuable in the identification of certain fluorescent minerals. Unlike long wave UV, the short wave UV cannot pass through ordinary glass nor most plastics. The shortest wavelengths cannot even travel very far through the air before being absorbed by oxygen molecules as they are converted into ozone.""""
http://answers.yahoo.com/question/index?qid=20090121040709AARwZGC

Then I googled "ozone health risks" and found this.

""""Studies have indicated that exposure to ground-level ozone air pollution, even at very low levels, can cause a number of respiratory health effects--particularly over time.""""
http://www.sbcapcd.org/sbc/ozonehealth.htm

""""Breathing ground-level ozone can result in a number of health effects that are observed in broad segments of the population. Some of these effects include:

Induction of respiratory symptoms
Decrements in lung function
Inflammation of airways
Respiratory symptoms can include:

Coughing
Throat irritation
Pain, burning, or discomfort in the chest when taking a deep breath
Chest tightness, wheezing, or shortness of breath
In addition to these effects, evidence from observational studies strongly indicates that higher daily ozone concentrations are associated with increased asthma attacks, increased hospital admissions, increased daily mortality, and other markers of morbidity.  The consistency and coherence of the evidence for effects upon asthmatics suggests that ozone can make asthma symptoms worse and can increase sensitivity to asthma triggers.""""
http://www.epa.gov/apti/ozonehealth/population.html



Now is it just me, or does this just seem unsafe to run in a home?

I personally would not want to be generating ozone all the time the bulb is running, it is killing germs sure, but it is killing me too.

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Re: your thoughts or suggestions on my laminar flow hood project [Re: PussyFart]
    #18076345 - 04/08/13 11:42 AM (11 years, 1 month ago)

I'm plenty familiar with ozone.  And I can tell you that a 15-25W UV tube does not generate much, if any, ozone.  Certainly not dangerous levels.

You get a lot more ozone out of an electrical ozone machine on the normal setting you would use it at.  I'm not a proponent of breathing ozone, but ozone levels from a machine aren't particularly dangerous, and the UV light certainly doesn't come anywhere near them.

I pulled up a little quote from a corona vs. UV ozone generator site...
Quote:

Highest concentration of ozone that can be produced by 185-nm UV lamp is 0.2 percent by weight, approximately 10% of the average concentration available by corona discharge




So we're talking a different wavelength of UV light, and even then it's only 10% of what those electrical machines can produce.

You can also easily smell ozone, so there should be no problems.  Even if they mixed up the bulbs you would start smelling ozone long before it became dangerous.


-FF

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Re: your thoughts or suggestions on my laminar flow hood project [Re: fastfred]
    #18077615 - 04/08/13 03:42 PM (11 years, 1 month ago)

:asianofapproval:

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