Pretty simple question, but I am having people over tomorrow evening to swim and BBQ. My pool water is pretty cool right now as we had an unseasonably cool week with lots of rain last weekend. So I have until tomorrow evening to warm the pool up as best as possible. Now I know without a heater I will not get far, and "warming" the pool up to an extent is kind of a silly question. But I want to make sure I do everything I can to save a degree or two. So should I turn off the pump until then? Or let it run during the day? I wasn't sure if running the pump during the hottest part of the day (mid 90s this afternoon) would help or hurt? I will put the solar cover on tonight. But would it help if it was just left on until tomorrow evening (without pump) or will the pool warm more during the day with it off?