Canister Filter problem
I have a Marina CF 40 canister filter on my 20 gallon aquarium. I just recently set it up again after not having the tank up for about 2 years.At first the filter appeared to be doing it’s job, but now it seems like it isn’t filtering the water at all.
The filter appears to be running - there is decent water flow from the spray bar. The filter media is clean. But the tank quickly gets dirty again after I clean it and there is a lot of particulate matter in the water. I skipped a weekly cleaning last week because I was sick and this morning, the tank looked like it hadn’t been cleaned in months. How can it be circulating the water, but not actually filtering the water?