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Offlinenimbus
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Air Circulation - Help Needed
    #2779070 - 06/09/04 09:34 PM (13 years, 18 days ago)

I need some help about automatic air exchange in terrariums and think there's not much written on this, if there is, so please send me links. (I have read almost everything on shroomery though)

I have an aquarium air pump and something called an Air Tube (not air stone) which is a flexible tube, covered with a sponge like material with very small holes in it, which are almost invisible to the naked eye.
My questions are: is the most smart thing to do- to put the tube in the bottom of the terrarium or the middle or the top? is there a difference?

after having made that choice, where should I open a hole (or two?) to let the air out? (filled with polyfill)
do I need extra holes at all if the terrariums lid is not air tight anyway?


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OfflineSev
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Re: Air Circulation - Help Needed [Re: nimbus]
    #2779238 - 06/09/04 10:25 PM (13 years, 18 days ago)

Best bet would be to put it on the bottom of the tank, and then cover that with your perlite and water.

And, no, you don't need to open a hole in the terrarium unless you've gone nuts sealing it up.  :smile:


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OfflineK20A2
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Re: Air Circulation - Help Needed [Re: nimbus]
    #2779379 - 06/09/04 10:54 PM (13 years, 18 days ago)

I have an airstone under my perlite in the water. No air holes in the rubbermaid, and it just gets fanned once in the morning. No problems as of now, but I think my humidity is to high so I have to work on that.


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Offlinenimbus
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Re: Air Circulation - Help Needed [Re: K20A2]
    #2780253 - 06/10/04 06:58 AM (13 years, 18 days ago)

I wont use the air tube for humidity..I think that is not what it is for..Perlite and the casing layer are enough for humidity--

and for having it under the perlite is OK..but IN WATER???
I think it is good to have the perlite wet but having water
in the terrarium that you can put the air stones in it is too much..
isnt it??


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OfflineLoverOfMana
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Re: Air Circulation - Help Needed [Re: nimbus]
    #2781769 - 06/10/04 03:23 PM (13 years, 17 days ago)

Nope, the bubble wall wands you have can be under water. Make sure you have enough perlite in there so your cakes aren't floating though :P


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Offlinenimbus
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Re: Air Circulation - Help Needed [Re: LoverOfMana]
    #2782593 - 06/10/04 06:46 PM (13 years, 17 days ago)

I dont use cakes, I am growing pan cyan in 1 liter trays.
still not sure if having water so deep that you can put an air stone
in it is a good idea..so much water is an invitation for contams I guess. but again, that is not my question actually..
it was:
is the most smart thing to do- to put the tube in the bottom of the terrarium or the middle or the top? is there a difference?

that means I dont want to put it in water anyway! the air tube i use is only for slower flow of air and better distribution..


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InvisibleMagashM
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Re: Air Circulation - Help Needed [Re: nimbus]
    #2782620 - 06/10/04 06:58 PM (13 years, 17 days ago)

Ok, forget the water. I tried not to be boaring but the reason I made the pod with air from the bottom and why it's better. The fundamental principal behind using air entrainment is to sufficiently mix the two (fresh air and stale air) together and then re-distribute them back into the environment in a more balanced way that is then more beneficial to the mushroom crop. Without this sufficient mixing of the gasses present within the grow space, the crops will remain stunted and will likely never reach their optimum potential.

With the poormans pod, the settling co2 air is met and diffused by a curtain of fresh air rising from beneath the Geo-lite surface. This rising flow of air is created from the air diffuser rod situated below the Geo-lite surface, which is powered by the air pump. The rising air pattern not only prohibits the heavier co2 air from settling down onto the bottom surface as usual but it also simultaneously diffuses the co2 with fresh air as it is distributed back into the environment or grow space where it can be put to good use.

In this way, the poor mans pod creates the same desired phenomenon as offered by more conventional means of air entrainment found in much larger-scale commercial applications where a mixing box is commonly used to accomplish this important task.


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