I have a 36 g bowfront, non planted, fully cycled freshwater aquarium. I have 12 Golden Cloud Minnows, 6 Zebra Danios, and 4 UDC's. I have had the aquarium for a little over 6 months. I have never used a heater because my tap and RO water have kept the tank between 72-74f. My concern is that winter is coming and my house water (tap and RO) will get colder and will make the tank temperature too cold. I know it is deadly to raise the temperature too quickly, so I am not sure how to go about using a heater to maintain the current temperature or even slowly raise it a degree or two.
Any advice is greatly appreciated. Also, what is the best heater to get?
Any advice is greatly appreciated. Also, what is the best heater to get?