kmlong
Aquarium Advice Activist
Just lately my biowheel has gone from spinning nicely to barely spinning at all. It does go around but it seems caught up and nothing is there to slow it down. I take it off and it spins freely on the axis, put it back in and it goes slow. The water flow is the same and the cartridge is not clogged. I do notice what i think may be brown algae on the wheel. Whatever it is seems to be weighing it down causing the slowing. Will it hurt if I brush the pleats off in old water? Would the bacteria on the wheel actually be visible? I don't want to mistake the brown algae for what is actually bacteria. Any advice would be appreciated. thanks