About 9 days ago my CC spiked to 1.5ppm so I decided to SLAM the pool to get that number down.
My CYA is 40ppm, so I would add enough liquid bleach to get the FC to 20ppm at night, and it would drop to about 16ppm the next night when I would add more to get it back to 20ppm. Rinse/repeat for about 3 nights and then my CC hit 0.5ppm (slight pink after developer is added, but disappears after 1 drop). So I decided to give it another night to try for 0.0. Next night 0.5ppm again (same thing). After 4 nights of that I decided to give it the overnight FC loss test. It lost 0.5ppm FC so I decided I was done SLAMing.
After two days of adding no chlorine my FC hit 8ppm today for a nice swimmable level…. But CC is back to 1.5ppm!
No visible algae…… what gives? Should I keep SLAMing?
My CYA is 40ppm, so I would add enough liquid bleach to get the FC to 20ppm at night, and it would drop to about 16ppm the next night when I would add more to get it back to 20ppm. Rinse/repeat for about 3 nights and then my CC hit 0.5ppm (slight pink after developer is added, but disappears after 1 drop). So I decided to give it another night to try for 0.0. Next night 0.5ppm again (same thing). After 4 nights of that I decided to give it the overnight FC loss test. It lost 0.5ppm FC so I decided I was done SLAMing.
After two days of adding no chlorine my FC hit 8ppm today for a nice swimmable level…. But CC is back to 1.5ppm!
No visible algae…… what gives? Should I keep SLAMing?