What the appropriate amount of time to have your solar cover on? Can you have it on too much? Just curios as my neighbor made a comment when I went out to check the temp and skimmer after work. She was saying you shouldn't leave it on all the time... Since we were out of town last weekend and all, it has been on since last Wednesday night (about a week now). It's coming off tomorrow to clean and swim regardless, but I was just curious overall. Thanks!