According to the Pool School article "Water Balance for SWGs," the best time to run the SWG is:
"...during the day while the sun is shining on the pool. Unless there is some other reason not to run the pump during the day, like time of day electric rates that are higher during the day, program the pump to run while the sun is shining on the pool."
My question is, simply,: Why?
I currently run my in-floor cleaner from 8 PM to 12 AM and the filter from 12:01 AM until 4 AM for a total of 8 hours. My SWG is only on with the in-floor cleaner, so I'm "chlorinating" for 4 hours per evening. Seems a bit counter-intuitive to me to run the SWG during the day. From what I understand, even with a proper CYA of 70-80 ppm, running the SWG while the sun is out will burn off chlorine almost as fast as your SWG is adding it to the pool.
Thanks in advance!
BTW, today's K-2006 test results: