since i dont want the expense of buying a co2
system i want to try the diy, i think i will do the 2 ltr bottle thing and have the air line go into another bottle that has the tubing rapped in circles going down to the bottom of the bottle then out into the tank, will that help any
the ones i see, the hagen syste, has the bubble thing like that where it goes down a series of declines... what that do?
will this produce enugh co2
and where will i put the tub in my tank?