Sponge
Aquarium Advice Newbie
Hi, I have two fresh water tanks, one is a 29 gallon with 6 mollies and 3 platys, and the other is a 15 gallon with 4 african dwarf frogs and 1 betta. Both tanks are infested with hydra and there are even some hydra attached to my frogs. I've tried scrubbing the tank and doing frequent water changes and I've even tried turning up the heat while my fish are in a separate tank. NOTHING SEEMS TO GET RID OF THEM what do I do?