I have a 60 gallon tank that we've had for over a year now. I had an algae problem. Last week I bought a new magnet brush (love it) some algae killer (only used a tiny bit) and two cory catfish, two african dwarf frogs, and a pleco. Now I've lost three fish-one of them a clown loach that we've had since we started with a ten gallon tank. He (she) is prob 3+ inches long. Why is everyone dying? I've turned up the heat, did a water change today. It's really really upsetting to see all of my older established fish dying like this. I read that the clown loaches are social and one won't survive on it's own so I obviously need to get another but dare not buy anything now. When do I replace? Is there anything I can do/say to Petsmart (where I bought the new fish and would only assume the ich came from-maybe I'm wrong) about the disease and all of my lost fish? This all started Thursday-that's when I turned up the heat at least...