I just picked up the Fluval 88g-co2 set-up. I put the thing together last night. So far it look likes its operating well. I can't wait to see what kind of growth I get with my plants. Anyone know where I can get the 88g-co2 canisters in bulk? I see a 3-pack for around 36 dollars but if I can get a 5 or 10 pack that would be better.