500 watt heater makes a difference...but never got the water in FT above 68. Started looking at the cost to run it 24/7 but at $50 per month have decided to cut back on the run time.

If I don't do a flood and drain into the night time hours and just do a constant flow with my battery backup at 150 gals of water per hr. to each GB. Should help out with the heat lose at night, not sure if it will damage my system. Any words of wisdom as to what damage this might cause.