I accidentally ran a tank (easy fish and corals) with no heater for a year. The fish , the corals all seemed totally fine. Maybe even healthier. House stays around 70 at night 72-74 during the day all year round. Tank had a glass cover but it was pretty consistently 2*F above room temp. Has anyone run a full on mixed reef at those temp, I'm considering running my new build with no heater. Any advice, warning, experience etc. is the higher temp solely for better growth?