Good info. on Red sea salt. Thanks. I had been used Tropic marine, Brightwell and Instant Ocean without algae issue. Just switched to Red sea pro salt and got hair algae issue in the tank.
Your water evaporates will be a lot more during winter times. Summer heat will evaporate less. Only fresh water. Salt will stay in the tank. I only use the room fan to cool off my tank during summertime. Good luck