Snick
Fish Crazy
I have recently been looking for a C02 maker for my aquarium, and have decided on the Hagen Plant Grow Natural System with CO2. You can google it and see some results. It says it makes a total of 350 cc per tablet, but how much is this? is it enough for my 30 gallon medium-heavy planted tank? is it too much? does someone have another cheap aternative to a C02 thingy?