I am having an auto cover installed this summer. The cover will be navy blue.
Has anyone experimented with how much water temperature rises having the cover open during the day vs. having it closed? Obviously, its better to have it closed at night, but I'm not sure about during the day.
On a sunny day, my pool will heat up 3-4 degrees from morning to evening uncovered. I have a dark blue liner. It doesn't seem like I'd be able to get that much temperature rise with the cover on.
I know there are other factors to consider when deciding to leave the pool covered or uncovered during the day (chlorine consumption, water loss, debris in pool), but want to focus this discussion only on heat gain.