Hey Guys and Gals, I am about to start setting up my RO/DI Water storage room and was wondering about heating. Couple of questions... First off I live in Nashville Tennessee area so you know the climate. I will be running two 105G Water storage tanks. Tall and thin. What type of heater should I use? Should I heat both tanks? Or is heating the RO/DI water tank pointless? I will be running a 10G ATO So I am not sure how often I would be adding large amounts of RO/DI water to the tank. I am using the Cobalt 300W NEO-THERM SUBMERSIBLE HEATER for my main tank and I choose this after much research and feel this is the best for my tank, but wondering if it would be good for a 100G Water storage tank. Also I want to see how you guys mount heaters in these type of tanks, or do you just let them hang inside. Keep in mind also the reason I am asking with the 300W NEO-THERM SUBMERSIBLE HEATER is that it technically is two 150w heaters tethered together, SO I would need to mount both. Which is also making me question if that is a good choice. Also what Thermostats do you run for making sure your heater is working for your Water Storage tanks? Is there anything else I am missing when it comes to setting up a water storage room?