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OfflineCubie
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FAE tek.+Fc soon to be glovebox
    #7943802 - 01/28/08 02:09 AM (16 years, 5 days ago)

Usually I have a filtered air pump running into the Fc, and a hole with a HEPA filter for the air to go out. But the pump burnt out, so I got a plastic tub and cut out a hole in the top and put a fan on it. Then I put a smaller 6 by 4 tub on the side with a filter in the end so I can "plug' it into the Fc
If I put a fan ón the other side sucking the air out of the Fc without a filter somehow around it would contams get in? Or would the fan keep them out along with the positive air flow?

Ill post some pics tomorrow night


Edited by Cubie (02/02/08 12:24 AM)


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OfflineScavengerType
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Re: Contam risk? [Re: Cubie]
    #7943853 - 01/28/08 02:33 AM (16 years, 5 days ago)

The only risk is that air will flow the other way through your fan. This could only happen if your hepa filter clogged and the fan created substantial negative pressure. This is important you seam to think it's positive pressure but it's actually a vaccuume in there with the inflow from the negative pressure being drawn through the hepa filter.

I might recommend putting some form of hood around the fan to keep contams from getting near it. How fast is the fan running and how's your Humidity? The problem is not likely significant since many terrarium techs with perlite instruct people to make uncovered holes in the terrarium and let it sit. Colonized cakes are in little danger of becoming infected as I (a noob) understand it from normal gas exchange though adding a fan to the whole thing makes it kinda blurry.

<edit>
never mind I thought the airflow dynamic was based on suction.


--------------------
"Have you ever seen what happens when a grenade goes off in a school? Do you really know what you’re doing when you order shock and awe? Are you prepared to kneel beside a dying soldier and tell him why he went to Iraq, or why he went to any war?"
"The things that are done in the name of the shareholder are, to me, as terrifying as the things that are done—dare I say it—in the name of God. Montesquieu said, "There have never been so many civil wars as in the Kingdom of God." And I begin to feel that’s true. The shareholder is the excuse for everything."
- Author and former M6/M5 agent John le Carré on Democracy Now.
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Edited by ScavengerType (01/30/08 12:05 AM)


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OfflineBejeezis
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Registered: 01/18/08
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Re: Contam risk? [Re: ScavengerType]
    #7944150 - 01/28/08 07:28 AM (16 years, 4 days ago)

Aye, from what I (also a noob) have heard and experienced, fully colonized cakes are very hearty and it takes a bit of neglect to contaminate one.

For example... RR (RogerRabbit) grabs em with his bare hands and tosses em around in his PF Tex style grow video (even drops one into the sink!) and then places em into a FC with a bazillion holes, absent of any filters. I'm pretty sure he knows what he's doing! :thumbup:

I wouldn't worry too much about the contams unless you have a very dusty old house, musty/humid air with no AC or tend to let food/dishes lay around till they change colors.

Now, it IS still possible for even the cleanest person to end up with a contaminated cake. So if you feel more comfortable with the filters, have at it.  Either way, don't stress too much! :grin:

Since you have quite a few posts and you're using an advanced setup, I'd assume you know most of this already. To actually answer your specific question, contams can't get in at all as long as your seals are air tight, your intake has a hepa filter and the air flow is positive... which it sounds like it is. I'd be really interested in seeing some of those pics!

Enjoy the process and Good Luck!


--------------------
___________________________________________________________

Whether you're here to learn or teach the art of mycology,
do so with an open mind.

My posts are 100% fictional... 
I'm just makin it all up! :wink:


Edited by Bejeezis (01/28/08 07:34 AM)


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OfflineCubie
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Re: Contam risk? [Re: Bejeezis]
    #7949358 - 01/29/08 07:26 AM (16 years, 3 days ago)

The fan


The filter and female port



This only cost about 20 bucks all together.
Everything seems to work fine, ill update later too though


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OfflineRogerRabbitM
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Re: Contam risk? [Re: Cubie]
    #7949662 - 01/29/08 09:16 AM (16 years, 3 days ago)

Moving air like that will dry out your project, IF the fan is strong enough to push through that filter. However, doing so is like putting roller skates on an elephant. It isn't likely to have the desired effect.
RR


--------------------
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OfflineCiv
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Re: Contam risk? [Re: RogerRabbit]
    #7949679 - 01/29/08 09:24 AM (16 years, 3 days ago)

Thats too much lol.  Think fish tank pump for that tub.  It looks neato- but its just something that says "I didn't do my homework and look how much time I wasted"  You wont have any water left in your substrates to give you any fruit, if they don't travel to contam city.


Honestly... :smile:  Are you having that bad of FAE problems with your grows?


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"...Gal's seem to hate the thought of blending chicken shit in a blender.
So, wash it well afterwards & DON'T tell them..."  -Agar


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OfflineCubie
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Re: Contam risk? [Re: Civ]
    #7949775 - 01/29/08 09:55 AM (16 years, 3 days ago)

The fan just barely pushes the air through the filter. It almost puts a flame out but not quite. I had a smaller fan but it didn't do shit. So how's that gonna dry it out?


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OfflineBejeezis
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Re: Contam risk? [Re: Cubie]
    #7951189 - 01/29/08 04:27 PM (16 years, 3 days ago)

Well, that's one hell of a setup  :whoa:

The fact that that huge fan is barely moving air can't be good for the fan motor. 

But more importantly, you got a lot more goin on with that box than you need. Just a couple holes filled with polyfill (or nothing at all) would provide sufficient gas exchange.  You don't need to worry much about contams on fully colonized substrate.

Just put it under a light and mist 2-3 times a day and you'll have something to show for it most likely.

If i could see that rig in person, I'd know more to tell ya but analyzing Frankenstein from a photo is... well, it's hard to really tell ya what to do with it. My ultimate advice is: buy another tub, search these forums for a couple hours. Search for "fruiting chamber" with the forum search feature.  There's TONS of pictorial guides that will give you very reliable results.


--------------------
___________________________________________________________

Whether you're here to learn or teach the art of mycology,
do so with an open mind.

My posts are 100% fictional... 
I'm just makin it all up! :wink:


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Invisiblethedefone
deus ex machina

Registered: 10/06/07
Posts: 1,883
Loc: Gondwana
Re: Contam risk? [Re: Bejeezis]
    #7951247 - 01/29/08 04:35 PM (16 years, 3 days ago)

Quote:

It almost puts a flame out but not quite.



After it comes out the filter, or within the chamber? Moving that much air around inside your terrarium is only going to dry out your substrate. This seriously is the definition of overkill. Like Civ said... think fish tank pump.


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


I am become death, the destroyer of worlds.


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InvisibleDontPlay
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Re: Contam risk? [Re: thedefone]
    #7951982 - 01/29/08 06:50 PM (16 years, 3 days ago)

I think its overkill myself, also that looks really ghetto lol you got tap streched out holding shit on LOL
Also why in the world would you put the filter on there to filter the air being pushed out ??? That makes little to no sense at all, the dirty air will be filtered inside the FC before it leaves LOL  :bendoverrover:


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OfflineCubie
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Re: Contam risk? [Re: DontPlay]
    #7952063 - 01/29/08 07:06 PM (16 years, 3 days ago)

:crazy2: filtered air is being pushed into the Fc.
I was thinking about filtering the outtake because it seems like air goes both ways with a fan, just a lot stronger the way its supposed to be.
:crazy: the tape was there for support while the caulk dried. And a little on the fan to keep air from escaping.


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Invisiblethedefone
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Re: Contam risk? [Re: Cubie]
    #7952113 - 01/29/08 07:16 PM (16 years, 3 days ago)

Quote:

filtered air is being pushed into the Fc.



Duh. :wink:


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


I am become death, the destroyer of worlds.


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OfflineCubie
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Re: Contam risk? [Re: thedefone]
    #7952149 - 01/29/08 07:23 PM (16 years, 3 days ago)

Quote:

DontPlay said:
That makes little to no sense at all, the dirty air will be filtered inside the FC before it leaves LOL  :bendoverrover: 




Quote:

thedefone said:
Quote:

filtered air is being pushed into the Fc.



derr I pooped




Read the thread


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Invisiblethedefone
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Registered: 10/06/07
Posts: 1,883
Loc: Gondwana
Re: Contam risk? [Re: Cubie]
    #7952332 - 01/29/08 07:54 PM (16 years, 3 days ago)

Quote:

derr I pooped



Yeah, I never said that. But you are hilarious.

Sorry I misunderstood your overly complicated FC set-up. My bad. Let me just go over the advice you've been given...

Quote:

Moving air like that will dry out your project, IF the fan is strong enough to push through that filter.



Quote:

But more importantly, you got a lot more goin on with that box than you need.



Quote:

Moving that much air around inside your terrarium is only going to dry out your substrate. This seriously is the definition of overkill.



This is my favorite...

Quote:

It looks neato- but its just something that says "I didn't do my homework and look how much time I wasted" You wont have any water left in your substrates to give you any fruit, if they don't travel to contam city.




Also, you make no mention of how you are going to maintain high RH levels. Maybe you should rig a cool-mist up to that bad boy. Anyway, I think the general consensus here is you don't need all that nonsense. Go buy a new fish tank pump. One that pushes 2-3x the volume of your FC per hour. Peace.


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


I am become death, the destroyer of worlds.


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Invisibleflavoraid
now with twicethe ketamine andopiates!
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Re: Contam risk? [Re: RogerRabbit]
    #7952617 - 01/29/08 08:28 PM (16 years, 3 days ago)

Quote:

RogerRabbit said:
Moving air like that will dry out your project, IF the fan is strong enough to push through that filter. However, doing so is like putting roller skates on an elephant. It isn't likely to have the desired effect.
RR




lmfao RR's analogy for the day haha

I could imagine RR being a couples therapist. You brining chlamydia home from your trip in guam is like me boning your wife last weekend while you were on your trip.

but yeah he's right my friend had a small ass chipset fan running off of a old psu with a resistor to slow down the speed so it's at that point where you can see it spinning instead of a blurr and yeah his cakes dried out after a week he had to rebuild his terrarium and used the cakes as spawn.


--------------------
coda said:
imachavel, Man you really need to do some reading, the amount of bullshit you put into almost every single one of your posts is absolutely astounding.


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OfflineCubie
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Re: Contam risk? [Re: flavoraid]
    #7952699 - 01/29/08 08:40 PM (16 years, 3 days ago)

Everyone does relize that is not the fruiting chamber???
The filter will go into the Fc and the air will barly move in the Fc. Just enough to keep a positive flow. Ill post pics of the whole set up soon.


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OfflineCubie
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Re: Contam risk? [Re: Cubie]
    #7952731 - 01/29/08 08:44 PM (16 years, 3 days ago)

Jesus Christ do you think I seriously have a huge fan on top of my fruiting chamber?

Its basicly the same as puting a air pump in a box with a HEPA filter in the lid so its sucking clean air except mine has a fan and is pushing clean air


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OfflineCubie
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Re: Contam risk? And a FAE tek. [Re: Cubie]
    #7952912 - 01/29/08 09:11 PM (16 years, 3 days ago)

Quote:

Cubie said:
Then I put a smaller 6 by 4 tub on the side with a filter in the end so I can "plug' it into the Fc





Plug in to the Fc meaning it is not the Fc.
This is were most of you went wrong


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OfflineBejeezis
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Re: Contam risk? And a FAE tek. [Re: Cubie]
    #7953279 - 01/29/08 10:05 PM (16 years, 3 days ago)

Quote:

Cubie said:
Quote:

Cubie said:
Then I put a smaller 6 by 4 tub on the side with a filter in the end so I can "plug' it into the Fc





Plug in to the Fc meaning it is not the Fc.
This is were most of you went wrong




Ok ok, now it's starting to make sense, sorta.

So that thunder dome is the assembly that forces fresh air into your FC.

Well, then i must say that it is a very innovative, imaginative and intimidating setup. And it looks like it would work too. I'd still say it's overkill since you don't really need filtered air flowing into your FC (unless you have some fairly unclean habits) but at least now i can say that i believe the contraption would do it's job at keeping contams out of the FC and supplying FAE. This would assume that your seal to the FC was airtight and there aren't any leaks in the duct tape. The fact that it barely moves a candle flame sounds like a fairly good amount of air flow.


The real test is to hook that sucka up and see what happens. I have never seen anything quite like it and I am extremely interested in seeing how it plays out.

Do you plan on posting a grow log? I would love to see how it works!!

Don't get discouraged if we poke a lil fun! You gotta admit, that thing won't win any awards for finesse but it will definitely catch the eye!  :whoah:


--------------------
___________________________________________________________

Whether you're here to learn or teach the art of mycology,
do so with an open mind.

My posts are 100% fictional... 
I'm just makin it all up! :wink:


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InvisibleRoYaL_fLuSh
Stranger
Male

Registered: 01/04/08
Posts: 499
Loc: UK
Re: Contam risk? [Re: Cubie]
    #7953350 - 01/29/08 10:19 PM (16 years, 3 days ago)

this is working well for me .. get an electric inflater ( for air mattresses and such ) and u can do it 2 diff ways .. plug the nozzle end into your terrarium with a coffee filter or 2 or spread of polyfil over the out-hole .. or seat the intake end in a larger hole in the terrarium and allow it to suck the stale stuff out .. both would need a few polyfilled vent areas in the wall of the terrarium to alow movement of either gas .. put it all on a timed socket extension and u never have to lift a finger ..


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