Well, somehow, with every pool I've owned, I end up with the "Mystery Pool." I fought algae in our current pool for several years, when I finally converted to the "TFP Method" which helped but didn't completely eliminate my troubles. Around 4 or 5 months ago, I finally converted to a salt system. The salt conversion was the best thing I've ever done, and I wish I had done it years ago.
Anyway, I'm mystified by the fact that I had green algae this morning, in the deep end, on a wall that is 90% in the shade. My test results as I expected are nearly perfect, as I've been testing continually with the TFP test kit and Taylor mixing device.
FC - 9
CC - 0
pH - 7.6
CYA - 80
Alch - 120
Salt - 3,600
The pH leveled off at 7.6 about 3 weeks after converting to the salt system and has remained there, and FC has never dropped below 7 (which is high according to the CircuPool manuals 1ppm-3ppm). According to the control unit, the salt level has remained between 3,400 and 3,600 since I installed it, which I verified with test strips. There has been no bather load, and very little debris in the pool. I even increased the pump RPM's to provide better water circulation. I'm running the pump around 8 hours per day, starting at a higher RPM for 2 hours, then a lower RPM for 6 hours. The CircuPool unit is running for 6 hours at 50% currently.
What all of that said, how the heck can algae be forming? I can't imagine an FC that's too high would cause the issue. The water is warmer, but obviously nowhere near summer temperatures. What kind of algae issues am I going to have in the summer, and why?
Should I start dosing the pool regularly with an algaecide?
Any input/advice would be most appreciated.
Anyway, I'm mystified by the fact that I had green algae this morning, in the deep end, on a wall that is 90% in the shade. My test results as I expected are nearly perfect, as I've been testing continually with the TFP test kit and Taylor mixing device.
FC - 9
CC - 0
pH - 7.6
CYA - 80
Alch - 120
Salt - 3,600
The pH leveled off at 7.6 about 3 weeks after converting to the salt system and has remained there, and FC has never dropped below 7 (which is high according to the CircuPool manuals 1ppm-3ppm). According to the control unit, the salt level has remained between 3,400 and 3,600 since I installed it, which I verified with test strips. There has been no bather load, and very little debris in the pool. I even increased the pump RPM's to provide better water circulation. I'm running the pump around 8 hours per day, starting at a higher RPM for 2 hours, then a lower RPM for 6 hours. The CircuPool unit is running for 6 hours at 50% currently.
What all of that said, how the heck can algae be forming? I can't imagine an FC that's too high would cause the issue. The water is warmer, but obviously nowhere near summer temperatures. What kind of algae issues am I going to have in the summer, and why?
Should I start dosing the pool regularly with an algaecide?
Any input/advice would be most appreciated.