Stabilizer (a.k.a. CYA or cyanuric acid) is like sunscreen for your chlorine - it blocks the sun's rays from breaking down your chlorine and makes it last longer. But too much stabilizer is worse than too little! This video shows various ways to lower your stabilizer for the lowest cost.

NOTE TO VIEWERS
Although I haven't taken down the videos, I need to announce that I have stopped using PHIN and I've cancelled my subscription. I had issues with the pH accuracy; the unit kept telling me to add pH Up even though the level was too high. Also, their customer service and support severely declined since the company was acquired by Hayward. I still love Hayward products and use a lot of them with my pool, just not pHin.