Trichlor Tablets stabilized chlorine

Slow dissolving & composed with stabilizer, which can cause a pool to become over stabilized. Ideal stabilizer level is 20 ppm. Is outlawed for commercial use in many states & should never be used in indoor pools or hot tubs. The longer it is used in the same water, the lower the oxidizing ability of the chlorine becomes. It strips alkalinity (50lb pail) 98.6% Active Ingredients