diy co2 size? - The Planted Tank Forum
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post #1 of 3 (permalink) Old 01-21-2012, 12:18 AM Thread Starter
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Question diy co2 size?

ok so i've put more plants in my 63g tank, what size bottle/bottles/bin/barrel would i need to use for a tank this size? i'm thinking of using a glass gallon demijon as i've got 7-10 of them in the shed and they are generally used for homebrew so "should" hold the pressure ok?
the source of my plans is here:-
it goes into yeast types so much its made my head spin but i'll decide when i've built the thing...

think i'll go with the powerhead as a diffuser though as i've got one in already just to airate the water so if i fed the co2 in the bottom it'd work...
one question more though, i've got clear glass and brown glass ones, does it matter which i use?
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post #2 of 3 (permalink) Old 01-21-2012, 01:31 AM
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if its glass, it will hold the pressure just fine. just make sure whatever cap or stopper you use is in there pretty snug.
the glass color probably doesn't matter
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post #3 of 3 (permalink) Old 01-21-2012, 01:49 AM
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Glass color doesn't matter. But I prefer plastic. Remember you're going to be moving, emptying, and refilling these on a regular basis; they will be heavy enough without glass adding to the weight.

I ran a 46G successfully on two gallons. Every setup is a little different, but three gallons will be a good starting point.

Standard brewers yeast is fine to start with. Just make sure its the normal stuff, not anything that says "fast rise"; that will give you a large surge of CO2 then quickly burn out.
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