Anyone using a sump?
I thought it might be nice to get all the gear out of the tank and into a sump but haven't got any encouragement from my local aquarium store. They said it would cost too much CO2 but they're still using bubbling diffusers while I dissolve my CO2 externally in the return path from my filter - a 5 lb cylinder lasts 6 months for my 55. Be nice to just have a power head and nothing else in the tank. I'm setting up my 2 20 gallon tanks with a sump anyhow so I'll see but wondered if anyone else is doing this. Thanks.