I'm curious about experiences with plants that do well in colder temps as well the effect of plants when the temp varies between night and day. I currently have a mini s setup without a heater and the temp drops to around 67 at night and moves up to 73 during the day. After several months the HC looks super healthy as well the E.T. Micro. Anubias (which I don't think is sensitive) hasn't really done all that great.