Things have been going good so far, pool still looking good! MY questions about CYA. I retested CYA today and can still faintly see the dot at the bottom with the water all the way to the top. Should I estimate it to be 20 and try raising it to 30?
If your confident with that reading then yes I would add some more to get to 30. Wait a week to retest. If later you find your losing more than 2-3 ppm to the sun you can bump it up again. Make small increases at a time. You don't want to over shoot this level. ?
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