This summer I had to run my pump for 15 hours and have my SWG output set to 80% to maintain proper FC 5ppm for my CYA of 80.
Does that amount of pump time and % seem out of the ordinary?
Background about my pool: The pool is not quite one year old. Swim load is on the heavier side for a residential pool. Wife taught private lessons 7 hours a day plus family and friends use everyday. Pool is in full sun, but we were mainly in the upper 70's all summer. We had a handful of days in the 90's. The pool temp was 85-90 degrees all summer with the solar heating.
Lately our temps have dropped and the pool is now running 80-85 degrees and our FC is running too high. It rose to 17ppm from 5ppm in two days. I turned off the SWG and let FC drop to 7ppm. I then set the pump run time to 10 hours and turned the SWG to 20%. I let this run for one day and checked my FC yesterday and it was 12ppm. I turned off the SWG again last night and will let the FC lower. We still use the pool everyday but the lessons have stopped.
I have removed the SWG to look for scaling but have found it to be clean every time. My last check was 2 weeks ago.
With this info does it seem like my SWG is behaving reasonably or is something acting up?
BORATES 45ish not quite 50
I did have nascent algae at the beginning of spring but with the help reading this forum I fixed my water and have had no problems all summer. The Chlorine/CYA Chart in pool school was the key to my success.