Ok so i bought my lil guy Al a heater and thermometer. I decided to install it while doing my water change ( I have a three gallon tank with ug filter by the way) and when I released him back into water after letting him float in a cup on top for twenty minutes he kept flaring at the thermometer! should take it out or what? Maybe I released him too early and the water temp shocked him :-( but I don't want him to feel threatened all day long. Is it healthy for him to flare up? I just want him happy.