Liquid Stabilizer allows you to get the important addition of stabilizer into your pool water, without having to pre-dissolve it or add it through your pool's skimmer. Simply shake the bottle, and pour directly into your pool. Typically only need to add once per season. Stabilizer needs to be added to any chlorine pool that does not use stabilized tablets (salt pools, liquid chlorine or Non-Stabilized Tablet systems). One gallon will add about 30 ppm of stabilizer (or CYA) to a 10,000 gallon pool