Hello... my outdoor pond has sludge and algae on the bottom. It is about 100 gallons (I think) and 12 inches deep, give or take. We created it specifically for our 1 red ear, Shelley. The water is clear due to the UV light the water is pumped through and back into the pond. The filter is one of the in the pond varieties. It is about a foot square and is attached to the pump that runs through the UV light. I am cleaning the filter pads everyday due to the build up of sludge. I've treated the pond with Fluker's sludge removal, but it doesn't appear to be doing anything all all. I don't mind the green algae on the sides and bottom. We also have 4 fish. Is there a safe product out there to break done the sludge?
Thanks so much