Well, the barb that died yesterday definately had fungus on her tail. It looked like a white cottony plume, almost like her tail had been shredded and then cotton stuck on it. We treated the tank for fungus hoping to save her, and she died right after the treatment. She was already pretty far gone. I guess we should have just taken her out and not treated the tank? But from what I gather, you have to medicate the tank anyway to rid the water and other parts of the fungus?
Our other barbs had ich, but we've just raised our water temp to help that. I didn't want to add ich chemicals on top of the fungal medicine. I think warming the water has helped significantly for our last 2 fish.
My hubby is doing a water change right now as well.