I have this weird slimey algae that formed in the crevices of my heater from algae wafers. its very persistent and I think it brings worms? I scrubbed it in hot water with a pipe cleaner and its back two days later, why? I only give my fish enough food to eat in like 3 seconds and I clean the tank like twice a week. I no longer put algae wafers in the tank, I only have a betta in my 10 gallon at the moment. how can I get rid of that algae and where is the detritus worms coming from? the betta food or the algae wafers? I know they come out because of excess waste but where Is their primary source?? thank you.