Chasarms
Silver Supporter
I always run the pump for 24 hours after adding CYA just to make sure it is all dissolved. I'm not sure it is a must do, but I do believe it is a common TCP practice. It may take 2-3 days before you get a stable CYA reading when testing.
In terms of whether to have it at 30 or 40, it will take some experimentation and depends on the water temps and sun exposure of your pool. I have found that 40 does seem to reduce chlorine loss from UV about 1 ppm per day more than does 30. Oddly, It didn't seem to help much at all going from 40 to 50.
In terms of whether to have it at 30 or 40, it will take some experimentation and depends on the water temps and sun exposure of your pool. I have found that 40 does seem to reduce chlorine loss from UV about 1 ppm per day more than does 30. Oddly, It didn't seem to help much at all going from 40 to 50.
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