Guys, I'm setting up a 600 gallon for some big catfish so I know I'll need an efficient bio filter. I am using a 150 gallon rubbermaid stock tank as the sump. If I use eheim pro media or anything similar could I get a good effect by just throwing a bunch in my sump and let the water flow over and around it, or would it be a lot better if I pack some canisters with the stuff and push water through the media that way. If it's the same if rather just cover the bottom of my sump with the stuff.
any suggestions?
any suggestions?