If you don't find liquid CYA or just prefer the cheaper granular (which is what most of us use), then a 2 lb. container of stabilizer would be perfect. That amount would add about 50ppm of CYA to your pool which is ideal for most pools. It may be labeled as stabilizer or conditioner, but check the ingredient labels and make sure it is just cyanuric or isocyanuric acid and not a bunch of other stuff blended in. Let us know what you buy and we'll help with how to add it. (NOT broadcast across the pool like the label tells you to do!)