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Offlinepummel
Stranger

Registered: 09/07/07
Posts: 44
Last seen: 13 years, 3 months
My Dub Tub Setup Suggestions/Comments are encouraged!
    #9150018 - 10/28/08 06:27 PM (15 years, 4 months ago)

well to start off I have 3 Eq 1 pint jars that are almost done (nocced on 10-7 and 2/3 are fully colonized just waiting the one week)

so I have a double tub fruiting chamber setup and just had a few questions about how my setup would work or if any experienced users see some flaws with my method so that I can improve upon it.

so my setup consists of 2 tubs (obviously)
one is half the height of the other, I am using the shorter one for the bottom and taller one for the top.

I have 4 1/4" holes drilled on the 2 long sides of the bottom short tub.

a layer of weather stripping is on the top tub to prevent it from slipping off the other one and to force air out of the 4 exhaust holes.

Now on the top tub there is only 1 hole drilled because my systems is feed with a fish tank air pump (it is a very large double tube design meant for 150  gallon tank)

now the air pump feeds into a small air tight container with an ultrasonic mister in it (fountain fogger) and then one hose leads from the container to the top tub.

should I drill bigger holes in the bottom tub, should I stuff the holes with poly fill? or should I not worry about it because the tub is in a constant state of positive pressure?

will this be enough air exchange?

I have done a test run and the rH stays at a constant 99% but that is with my digital thermometer/hygrometer that I have for around the house, my analog one should be arriving tomorrow.

Edited by pummel (10/28/08 07:06 PM)

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InvisibleJ3illy
Trainee


Registered: 10/18/08
Posts: 3,344
Re: My Dub Tub Setup Suggestions/Comments are encouraged! [Re: pummel]
    #9150215 - 10/28/08 07:03 PM (15 years, 4 months ago)

I'm not sure if 1/4" holes are big enough.. All the dub-tubs I've seen, the holes are bigger - at least an inch or two.. This is because you want to allow as much FAE as possible, since you technically shouldn't be opening till harvest..

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OfflineSpongiform
Some Cow
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Registered: 08/22/07
Posts: 3,994
Loc: Greener Pastures
Last seen: 8 years, 6 months
Trusted Cultivator
Re: My Dub Tub Setup Suggestions/Comments are encouraged! [Re: J3illy]
    #9150589 - 10/28/08 08:02 PM (15 years, 4 months ago)

If you're not using a casing, that should be plenty of humidity.  If you are using a casing you only need a casing of about 80% - in which case you probably wouldn't even need the humidifier hooked up.


Most tubs that I've seen on here had holes about 1-2 inches and were filled with polyfill (not too tight) or covered with micropore tape.

I suppose it depends on how big the tub is and how many holes (lots of small ones vs a few big ones). 

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Offlinepummel
Stranger

Registered: 09/07/07
Posts: 44
Last seen: 13 years, 3 months
Re: My Dub Tub Setup Suggestions/Comments are encouraged! [Re: Spongiform]
    #9155677 - 10/29/08 06:36 PM (15 years, 4 months ago)

well there are only 4 1/4" holes, but I have an air pump feeding the tub so it has a constant flow of air pushing out of those small holes.

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InvisibleJ3illy
Trainee


Registered: 10/18/08
Posts: 3,344
Re: My Dub Tub Setup Suggestions/Comments are encouraged! [Re: pummel]
    #9155698 - 10/29/08 06:41 PM (15 years, 4 months ago)

A dub-tub shouldn't have an air-pump, just make the holes the proper size.. How exactly are you planning on running it anyways?

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InvisibleJ3illy
Trainee


Registered: 10/18/08
Posts: 3,344
Re: My Dub Tub Setup Suggestions/Comments are encouraged! [Re: J3illy]
    #9155700 - 10/29/08 06:43 PM (15 years, 4 months ago)

I just read your original post - what you're doing isn't a dub-tub.. A dub-tub doesn't need any supplemental humidity cuz it should be maintained by the substrate, and by being sealed up..

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InvisibleShr00mZ
Space Invader


Registered: 04/15/08
Posts: 1,454
Re: My Dub Tub Setup Suggestions/Comments are encouraged! [Re: J3illy]
    #9155703 - 10/29/08 06:44 PM (15 years, 4 months ago)

I use quarter inch holes myself. I use tropical humidifer or whatever they're called. I did it dub tub style but I only need a single tub cuz its PE. I added 3 holes on each side and two on the end. No holes on top. Its literally covered with pins. I dont post pics..srry.. but its looks cool.


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