The highest quality conditioner is available at Pool Supply Unlimited. Otherwise known as stabilizer, cyanuric acid, and CYA. When dissolved in pool water, free chlorine residuals last three to dive times longer in the presence of sunlight.
Cyanuric Acid (conditioner) Properties pH 4.5
slow dissolving
maximum solubility = 1,600 ppm
not destroyed by any
pool chemical removed only by draining, splash-out, carry-out, and backwash
1 pound/5,000 gallons yields 25 ppm of conditioner