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OfflineJerrico
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Free air flow in a greenhouse (re: air filters)
    #6739114 - 04/02/07 05:10 PM (17 years, 9 months ago)

Hi guys, after 6 months of sorting my brain out after a really bad trip I decided I'm actually better now than I ever was so I decided to build a greenhouse and get back into it all (tiny-small-microscopic doses this time hehe)! :smile:

I'm going for something similar to described in Automated Greenhouse Guide...By Helltick. (BTW I searched the forums for 45 minutes and couldnt find the right answers)


Questions:

1 - My main problem is the air filter. I cant find HEPA where I live, and I cant find the AmericanAirFilter pictured here. I need something to filter the air going in (also placed on the humidifier intake), so what sorts of other materials can I improvise that are more common and easier to find? Can I use cotton? Polyfill? Suggest anything that will keep the bacteria out and i'll see what i can find.

2 - Can I use any kind of slow moving impeller type fan to move the air in as long as the air is filterred well? Or is it crucial that I find an impeller type (like pictured in link above) cool mist thingy, which is basically just blowing air slowly over some water not to dry the air too much? Considering I will have an ultrasonic humidifier next to it.

3 - In the guide mentioned above, i'm not quite sure where the air blown in actually exits. Should there be an exit hole at the bottom of the greenhouse if the air enters at the top?

Looking forward to answers.


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Curiousity killed the cat, so it can be curious only 8 more times.

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Offlinexhooliganx
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Re: Free air flow in a greenhouse (re: air filters) [Re: Jerrico]
    #6739257 - 04/02/07 05:34 PM (17 years, 9 months ago)

you don't need a filter. Once you get to that stage you're not in a sterile environment anymore anyways.


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OfflineJerrico
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Re: Free air flow in a greenhouse (re: air filters) [Re: xhooliganx]
    #6739340 - 04/02/07 05:45 PM (17 years, 9 months ago)

Eh??? What?... GH is a sterile environment. Well the whole room will be extremely clean but the environment in the GH can and should stay sterile as it NEEDS to be, as long as the air pushed inside it for free air exchange is kept sterile with filters.


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Curiousity killed the cat, so it can be curious only 8 more times.

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InvisiblePrisoner#1
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Re: Free air flow in a greenhouse (re: air filters) [Re: Jerrico]
    #6739356 - 04/02/07 05:48 PM (17 years, 9 months ago)

certainly no cotton, it's a natural fiber and will cause problems, polyfill is safe
for bacteria control just make sure you arent getting them wet
electricals and moisture dont mix, automation is a cheat, mushrooms need to know you care

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Invisiblesimplemachine
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Re: Free air flow in a greenhouse (re: air filters) [Re: Jerrico]
    #6739377 - 04/02/07 05:50 PM (17 years, 9 months ago)

Actually, lots of people fruit in some pretty dirty places. All you NEED to fruit is the right environmental conditions. RH, FAE, & light, no need for sterile conditions.


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OfflineJerrico
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Re: Free air flow in a greenhouse (re: air filters) [Re: simplemachine]
    #6739439 - 04/02/07 06:00 PM (17 years, 9 months ago)

@Prisoner#1, ah so bacteria can feed even on dry cotton? I thought it was bad only if it was wet.

Quote:

simplemachine said:
Actually, lots of people fruit in some pretty dirty places. All you NEED to fruit is the right environmental conditions. RH, FAE, & light, no need for sterile conditions.




True that, but I just want to be a bit of a perfectionist. But maybe that's a bad thing! I might as well relax and use something basic and improve only if I get contams. Food for thought, thanks. :smile:


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Curiousity killed the cat, so it can be curious only 8 more times.

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Invisibleagar
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Re: Free air flow in a greenhouse (re: air filters) [Re: Jerrico]
    #6739463 - 04/02/07 06:06 PM (17 years, 9 months ago)

>>>>>>>2 - Can I use any kind of slow moving impeller type fan to move the air in as long as the air is filterred well? Or is it crucial that I find an impeller type (like pictured in link above) cool mist thingy, which is basically just blowing air slowly over some water not to dry the air too much? Considering I will have an ultrasonic humidifier next to it.<<<<<<<

Impeller type coolmists
I don't think you grasp how they work.

Impeller mechanism is upside down, in this picture.


Coolmist impellers spin RAPIDLY @ high rpm.
A hollow tube, with a spiral in it.
Picks up water.
Which is then thrown into the comb like edges.
Which turns the water to micron sized particle.
The impeller also functions as a fan.
So pressure is created, which VENTS the mist OUT.


Impeller housings from various type coolmists.


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OfflineJerrico
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Re: Free air flow in a greenhouse (re: air filters) [Re: agar]
    #6739763 - 04/02/07 07:20 PM (17 years, 9 months ago)

Thanks agar! So I really need a cool mist for this setup, and I CAN NOT use just any kind of fan to push the air in?


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Curiousity killed the cat, so it can be curious only 8 more times.

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OfflineAkira
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Re: Free air flow in a greenhouse (re: air filters) [Re: Jerrico]
    #6739832 - 04/02/07 07:35 PM (17 years, 9 months ago)

Walgreens sells a pretty good Cool Mist for $19.99....


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Orissa India Bulk Grow (Tub Tek)
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"Our intention is our eternal fingerprint in the universe."

We know that God is good, and so are hamburgers and hot dogs. We know that hamburgers and hot dogs definitely do exist, so then by deduction of logic God too must also exist. Hamburgers + Hot dogs = God.... Duh

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InvisibleRoachMan
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Re: Free air flow in a greenhouse (re: air filters) [Re: Jerrico]
    #6740113 - 04/02/07 08:34 PM (17 years, 9 months ago)

1 - There is a good Vicks cool mist that comes with a filter on it; I'd go with that OR tape Tyvek over the open intake hole of whichever coolmist you decide upon using (impeller type as stated)

2 - The higher quality the motor on the cool-mist the more air it's going to move in the GH. You want to drill a couple of small holes in the tube coming out of the coolmist so that it decreases backpressure (backpressure kills your motor faster).

3 - The stale CO2 will fall to the bottom of the greenhouse and exit any small holes. If you push enough air with the cool mist while keeping it more humid with the ultrasonic the air dissipates well, and you have monster flushes.

Good luck, and PM me if you need any help getting it setup.


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"The mistake that I make is to try to come awake in a place you're just supposed to get shit faced or baked."

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Re: Free air flow in a greenhouse (re: air filters) [Re: RoachMan]
    #6740376 - 04/02/07 09:38 PM (17 years, 9 months ago)

>>>>>>> OR tape Tyvek over the open intake hole of whichever coolmist you decide upon using <<<<<<<<<<<

Don't use TYVEK over a coolmist intake.
It is not porous enough.
Meaning, no real air flow & burning the motor up, quickly.


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InvisibleRoachMan
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Re: Free air flow in a greenhouse (re: air filters) [Re: agar]
    #6740399 - 04/02/07 09:44 PM (17 years, 9 months ago)

Oh, CRAPOLA! (Sorry about the misinformation.)

Maybe I shouldn't beleive everything I read in teks!

*slaps himself with a large tuna*


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"The mistake that I make is to try to come awake in a place you're just supposed to get shit faced or baked."

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Invisibleagar
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Re: Free air flow in a greenhouse (re: air filters) [Re: RoachMan]
    #6740440 - 04/02/07 09:55 PM (17 years, 9 months ago)

LOL, years back I burned up my first couple coolmists, learning not to place a filter on them, less porous than it came with. And, learning outlet diameter (if hose connected) should be 1.5 inch, or or larger. Otherwise, you get back pressure that toasts the motors, in a month or 6 weeks. We all must learn, from our mistakes. That's how a lot of myco related things go.


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OfflineAkira
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Re: Free air flow in a greenhouse (re: air filters) [Re: agar]
    #6740765 - 04/02/07 11:31 PM (17 years, 9 months ago)

I just add some peroxide to the water...


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

Orissa India Bulk Grow (Tub Tek)
Bulk Steamer Pasteurizer Tek

"Our intention is our eternal fingerprint in the universe."

We know that God is good, and so are hamburgers and hot dogs. We know that hamburgers and hot dogs definitely do exist, so then by deduction of logic God too must also exist. Hamburgers + Hot dogs = God.... Duh

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Offlinexhooliganx
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Re: Free air flow in a greenhouse (re: air filters) [Re: Akira]
    #6740869 - 04/03/07 12:07 AM (17 years, 9 months ago)

the peroxide is just going to breakdown and shouldn't be very beneficial. Basically the idea is you're supposed to have fully colonized substrate in your FC. You don't have to really worry about sterility.


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OfflineBabo911
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Re: Free air flow in a greenhouse (re: air filters) [Re: xhooliganx]
    #6740957 - 04/03/07 01:02 AM (17 years, 9 months ago)

This is why we pasteurize our casing and not sterilize :smile:


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Ronhero on the Growery is me

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OfflineJerrico
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Re: Free air flow in a greenhouse (re: air filters) [Re: xhooliganx]
    #6741205 - 04/03/07 06:17 AM (17 years, 9 months ago)

Thanks everyone!

The thing is, what if I can't find any coolmists around? Maybe I live somewhere in rural Asia or something. :smile: Can I just use a normal fan that will push the air into the tubes?

Quote:

xhooliganx said:
the peroxide is just going to breakdown and shouldn't be very beneficial.  Basically the idea is you're supposed to have fully colonized substrate in your FC.  You don't have to really worry about sterility.




Hmm, when I used boxes the substrate was fully colonised but sometimes upon fanning or harvesting the green stuff would settle in. The air wasn't that clean... So it can happen regardless! Or did I misunderstand you?


--------------------
Curiousity killed the cat, so it can be curious only 8 more times.

Edited by Jerrico (04/03/07 06:18 AM)

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InvisibleRoachMan
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Re: Free air flow in a greenhouse (re: air filters) [Re: Jerrico]
    #6741373 - 04/03/07 08:17 AM (17 years, 9 months ago)

Quote:

Jerrico said:


The thing is, what if I can't find any coolmists around? Maybe I live somewhere in rural Asia or something. :smile: Can I just use a normal fan that will push the air into the tubes?

Hmm, when I used boxes the substrate was fully colonised but sometimes upon fanning or harvesting the green stuff would settle in. The air wasn't that clean... So it can happen regardless! Or did I misunderstand you?




Do a search for "automated greenhouse", "greenhouse", or "automated".
I've seen something were someone used just a ultrasonic, a tub, pipes, and a computer fan to achieve what you are talking about.
It shouldn't be THAT hard to find a coolmist; EBAY ships all over the world.

The mean green probably set in because a) you actually didn't fan enough, and the contaminant enjoyed the stale air...which then set in OR b) when you removed the fruits you might not have been very careful (twisting motion, scissors, or both) and when you harvested you expose the underlying substrate (and exposed grains can contaminate).


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"The mistake that I make is to try to come awake in a place you're just supposed to get shit faced or baked."

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Offlinexhooliganx
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Re: Free air flow in a greenhouse (re: air filters) [Re: RoachMan]
    #6741445 - 04/03/07 08:52 AM (17 years, 9 months ago)

well if you live in rural china you should have been able to find a cool mist humidifier at the same hut you found your ultrasonic humidifier. If you wanna make something yourself here's one of agars inventions http://www.shroomery.org/forums/showflat.php/Number/6220224#6220224


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Re: Free air flow in a greenhouse (re: air filters) [Re: xhooliganx]
    #6741482 - 04/03/07 09:13 AM (17 years, 9 months ago)

Not only is keeping a sterile greenhouse unnecessary, it's also undesirable.

You want an amount of microbiologicals living on the pinning surface, because they can help stimulate primordia formation.

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