I set up a 20 gallon reef about a month and a half ago. Yesterday I noticed a few spots of ich on my ocellaris. I have 1 ocellaris, 1 coral banded, and some softies and LPS. Should I create a QT tank for the fish and let the main go fallow, try dosing a “reef safe” ICH treatment into the main, or feed very nutritious food, boosting immunity, and hope the ICH goes away? My water parameters are: ammonia 0, Nitrite 0, Nitrate 0-5ppm, SG 1.025, pH 8.2. The only foreseeable potential flaw is my temp, which I think is low 70’s. I’m getting a heater today. Any advice is appreciated!