Well, we had frost this morning and the trees are dropping their leaves. Decided to take the solar cover off, clean the pool and cover it up with the winter cover. I'll keep the water level up and pump running until the water drops below 60 degrees, then finish closing. We have a heater, but I just can't get in the mood to swim even with warm water when the wind is blowing cold air and the sky is dark. So, we are done for this season. Want to thank this forum for teaching me how to take care of my pool. It couldn't be easier!!