How can I can I treat ick without using heat or removing my charcoal bags. My water stays at low 60deg F. tank is still Cycling with fish dont want to remove filter again and i dont want to add a heater. they are lower temp water freshwater fish. Fish wont eat and have been slowly dying off. Fins are cloudy some cloudiness on eyes. and layed eggs a few weeks ago. I do know about tankless cycling this is just how the chips fell trying to keep a healthier tank.