Had to open earlier than planned, and hate the thought of running the filter without it being warm enough to swim. I understand until I get the pool water 'stable', I need to run it 24/7 (just opened today). But once it's up and running, what's the minimum amt of time I need for the water to safely cycle through filter, etc. Obviously, I will do it as much as needed to prevent algae, etc., but hate to run up a bill needlessly! Thanks!'