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  1. J

    Need some help with CYA

    My analysis: FC 3 TAC 3 CH 200 TA 90 CYA 99 pH 7.4 TDS 700 Phosphates 300 I have a 40,000 Gallon pool with a hayward NGS60 (60 Sq ft) filter. I recently had a quick algae bloom and being a kind of newbie with chemicals I used one dosage of Yellow Out, which is way under the recommended dose. I...