i read that the best temp for a green terror is 70-75 but it seems that mine is most active when its over 77. my temp is set to 79 as of now and he is soooooo active hes flying around the tank attacking my corys (theyll be fine) and swimming at the glass like hes trying to get through it. i like him best this way but idk if i should turn the temp down to 75 or 76.