Okay I need more info on new, cutting edge equipment-- Anyone using Aqua-Medic's Ceomat 250, a chemical CO2 generator? I'm not quite sure how this works, other than it includes a needle valve and bubble counter and you add reaction powder every few months (as opposed to filling a pressurized cylinder). From what I am told it is small--about 4" in diameter and about 12" tall...? Thanks for sharing, Todd March tmarch at primenet_com