:help: Hi, need advice....my guppy had some sort of fungus infection bit like cotton wool but not as thick, it seems to be over his body not just in one spot. Well i dont wanna treat whole tank as it would kill my good bacteria. so was gonna get a small tank as a qt tank with a mini filter,kind of like what you would put goldfish in. Anyway what treatment could I use and is it ok living with no heater for a few days in a warm room or I could get a very small heater. PLEASE need advice asap as i wanna get treatment tomorrow.