After draining and filling my pool, I added one bottle of CYA. I am at about 20 ppm where I'd like to be around 30. Would it be okay to use some left over tabs to raise the CYA levels? Is there anything else in them I need to be worried about? They are high quality diamond pool tabs. How many ppm for a 15,000 gallon pool will 3" tabs raise the CYA? I will discontinue use after reaching 30 ppm. Thanks.
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