I am fully planning on trying this. But does anyone know if it would work to use one half-gallon bottle for two 5g tanks? I would add a splitter somewhere so one line went into each tank, but I'm not sure if this would work with CO2 like it does with oxygen (is this a stupid question? i failed school)
Also, do you put boiled water in the airlock?
Also, now that I think about it, I was going to get one 1/2gal bottle for my 20g long, but then one 1/2gal bottle for two 5g (10g total) would be more CO2 than the 20g gets..perhaps a smaller bottle for the two 5gs?
Actually, because I'm an idiot, you use 5 bottles for 150g which means 1 bottle per 30 gallons. Since I have 30 gallons total I should only need 1 bottle and something to split it into three...does this sound like something that would work?
Last edited by Wayne Dwops; 04-08-2013 at 05:02 AM.