Pool Cyanuric Acid Dose
Cyanuric acid to raise stabilizer, or -- since CYA leaves only by dilution -- the fraction and gallons of water to replace to lower it. A starting dose to add slowly and retest.
Formula and source
Raise: ~0.81 lb (~13 oz) cyanuric acid per 10,000 gal per 10 ppm; lower: drained fraction = 1 - target/current.
NSPF CPO Handbook / ANSI-APSP-ICC (by name).
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