Daily FC Loss

[Mrichey912]

I’m having a hard time figuring out daily chlorine loss. I’ve only had this pool for a short time and I’m still working out the kinks. My OCLT is 1 ppm or less, 0.5 CC or less. I tend to lose 4-5 ppm during the day wether we swim or not. I’m in Texas, pool is on west side of the house with no nearby shade. Right now I believe it takes about 9-10 hours of direct sunlight. We also have a lot of suicidal bugs and I have to empty skimmers daily. I inherited a super high CYA pool (100+) so I figured sunlight loss would be less than what I’m getting. Any tips?

Latest readings:
FC: 10 ppm last night, 9.5 ppm this morning, 4.5 ppm this evening
CC: always 0-0.5. Barely changes color
pH: 7.5
Alk: 120
CH: 380

 

[Frodo]

If your CYA is at least 100, your minimum FC is 8. Letting it get below that is just asking for problems. You may need to SLAM and then try and keep your FC above 8.