quick question about solar covers

[ropdyke]

We have a blue solar cover, we used it when it was too hot, but know its getting in the upper 90,s and today 100 do I still use it. I don't like the water too hot, and during the day the water can be 90. Also when going on vacaction for a week should I use it. I am thinking the hotter the water the better the conditions for algee.
Thanks

 

[JasonLion]

Using an opaque cover while you are away is a great idea. The cover will help reduce chlorine consumption, and make it more likely that everything will still be fine when you get back.

There are mixed opinions about using a cover during the day on a hot day. Depending on a couple of things that are difficult to predict, you might be better off with it on or better of with it off.

 

[PaulR]

Re. temps, if you take the cover off at night, the water should cool off more than if you leave it on. Assuming the air temp drops below the water temp (radiation/convection cooling as well as some evaporation). Same principle as people running solar panels at night to cool the water.
--paulr

 

[ropdyke]

the solar cover is blue. I won't be able to remove cover for 4 days because we will be away.
Thanks