I have a cichlid tank with a sunsun 302 canister and a top filter. Though I have not tested it, but the water looks reasonably fine and fish are doing good. However, the substrate (brick red sand) is a bit dirty and I was wondering if the filters would pick it up over time and if I can leave it as is or I need to clean it. Looking forward to your advise.
Thank you for your help.
Thank you for your help.