At how many ppm of FC does it become unsafe to swim?
20x40 IG vinyl; ~25,000 gal; Hayward EC75 DE Filter; Polaris 360 w/ booster pump
Originally Posted by wetshoes1 At how many ppm of FC does it become unsafe to swim? With a CYA of 70, then I wouldn't have any problem getting in it at Cl of 10 or below. Janet
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