Planted FW tanks, substrate, pH and CO2 questions ..

[cale262]

Originally Posted by Cugio

Tom Barr (estimative index - plant guru) has a thread on his site going about his own tank with sump. It's been doing very well and he has no problems optimizing co2

Correct me if I'm wrong but I seem to remember reading that Tom was having issues with co2 and corrected it by sealing his sump, making it mostly air tight utilizing plastic sheets and duct tape...which may be worth the effort if you are keeping the sump.