This is my first "winter" in Georgia with a pool. I am planning on keeping the pool open - I have a freeze protection thermostat on my pump so it automatically comes on when the air temp goes below 38 degrees. I have a question regarding chlorine levels: My pool water is down to 55 degrees. I am not covering the pool. Do I still need to keep the FC level at 3ppm (recommended troublefreepool.com) all the time? I have read that algae cannot start in water below 60 degrees, and if that's the case can't I just start adding bleach in the Spring when the water temp starts coming back up?