Yup, I think I am getting that now, thanks to the tarp we only lost about 1 degree over night! Should be a reasonable temperature for a possible dip at around 5pm this evening. Chemicals looking good, tiny bit high on Alkalinity, but I'm not going to mess with it just yet. very excited waiting to get in this thing, it has been far more work, and far more complicated than I ever imagined! :0