normal fc loss due to sunlight

BR1

Member
Jun 20, 2020
9
NY
Curious, a normal range of FC loss during a sunny day, no swimmers, in a 14K gallon pool with CYA of 50. I am full sun. I lose about 5ppm from morning to evening. is this normal?
 

Chasarms

Silver Supporter
May 8, 2020
347
Dardenne Prairie, MO
I also have a fully exposed AG pool. I have experienced close to 5 ppm losses on the worst of days. my chlorine pump is set up assuming a little over 4. I have to wonder if the absence of a deep end allows for greater losses.
 

BR1

Member
Jun 20, 2020
9
NY
no chlorine loss overnight. i was testing in the morning and again late evening to see what loss there was. seems like my number is acceptable. been a nice summer so far up here in the northeast. sun is hitting the pool at 6AM and still has sun on it at 8pm right now. thanks again, i won't try to increase my CYA right now to combat it.