with regards to Shilo's DIY wet/dry trickle filter, would it be feasible to have the same sort of set-up, simply minituarised, and for only CO2?
I've got a pic on my work comp of what I mean, but I can't upload it!!
Basically, I have envisioned a small(ish) container (acting as the sump, and totally enclosed), with a submersible pump, a heater, intake for the water, another intake for the CO2, and the outlet for the sub pump, with the CO2 enriched & heated water going back to the tank... (obviously this would mean that you'd need a lot of GOOD sealant for the 5 holes it'd make... CO2 inlet, water inlet, outlet, and cables for heater & pump.)
Anybody got any other ideas? I think it would be great if it's workable, cause the CO2 would get dissolved w/out having a great big bell in your tank, the heater isn't in the tank anymore, so less visible etc... there'd just be another 2 pipes hanging off the back of the tank! :lol: