I was considering purchasing a sump for my 55gal but the inside stand measurements is about 10" front to back. I haven't found anything this narrow searching on-line. Would a refugium be an alternative? I was looikng at the "PRO 18 Hang On Refugium". I want to can my canister on the marine tank. I think phosphate is building up as I am starting to get another Cyano breakout. last time it wiped out my ebtire tank it was so bad. I plan to treat with "Red Slime Remover" but am looking inbto future to prevent this.
Mark
Mark