This is a tank 1 1/2 weeks old. I have a black molly that has ick. I have one of those heaters that won't allow you to control the heat, and it keeps my tank at only 76 degrees. The ammonia is usually under .25. I did one change (33%) yesterday before treating for ick, and added 2 tablespoons salt to a 10 gallon aquarium. I am treating with aquarisol. I also give my fish liquid vitamins in place of their food every other day or 3. I feed them a tiny bit (there are 2 mollies a danio, pleco and cat) each morning and night. Every 4th feeding, I hardly put anything at all in there for food.
I have removed the carbon portion of filter for treating them. Do I need to add an airstone and buy an adjustable heater? I will do whatever they need.