Hi! So I'm not new to betta fish care, but I have a question about a new tank. I have a betta in a 5 gallon, filtered, heated tank, but I'm wondering if the heater is making the water too warm. It's preset to 78, but the thermometer strip reads 82ish. My betta is very VERY active. HE eats great. He seems fine, but I just dont wanna accidentally fry him. Should I leave the heater off at night or is that a bad idea? Never had this problem before so I'm not sure what to do. Thanks in advance.