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Hey All I added 16oz of granular CYA 2 days ago and today when testing my strips show no change in level. Had been showing 0 CYA. I have an above ground Intex pool it’s roughly 5,000gal. PH- 7.4 TA-120 FC-2 or 3 ppm Can I trust strips or not? They’re dated 2024 and they the AquaCheck 4n1...