Daven, very similar indeed 
It was a very cold 39 F here last night, but the pool only dropped from 62 to 60 F. That’s pretty good for a 23 degree difference from ambient. It also is a lot less heat loss than I observed last year with the pool just on sand. I was expecting to see 6-9 F loss. For those in colder climates, the pool on 2" of styro definitely makes sense.
Thanks to: Release: Data storage, Energy/Temp/Humidity Graphs and energy optimization back to you
The pool sensor data can be viewed publicly. You can see live as well as historic data for four sensors… roof temp, solar output temp, and pool surface/bottom temps. Click the pic for live data:
The new pump should be here tomorrow to get those two new panels online. The pool water was at 49 F three days ago…and we’ve seen night temps from 39-45 F with day temps (mixed clouds with some rain) at a max of about 68 F. Regardless, the 7000 gallon pool has picked up about 15 F despite night losses.