I have a couple different options. I just set up my tank today with about 30 pounds of established LR and 40 pounds of new sand. Anyway, I have a fluval 403 canister filter hooked up to it right now. I hear they are nitrate factories? I don't want that obviously so I'm trying to figure out if I want to set up a sump or not. It's a 40g breeder. I have a CPR bak pack skimmer I guess I could run that hung on the sump if I go that route. I also have a large hob tetra filter I was thinking about making into a mini refugium... Is that possible? Just looking for opinions. Thanks!