Quote Originally Posted by crackerjack
In The Swim has cyanuric acid remover that is capable of removing 30-50 ppm of cyanuric acid in 10,000 gallons of water.
At $50 a gallon, not sure if it would be worth it though.
It removes the cya by causing a precipitaton reaction that turns the water very milky. It is melamine, exaxtly the same as the reagent used to test for CYA in our test kits. You know what that tester tube looks like with high CYA levels...imagine your pool looking like that for a week! Also, from what feedback I have heard about CYA reducers/removers...they lower the CYA more in the range of 20 ppm per 10000 gal. Do the math. A water change is cheaper (and will probably take less time!)