Leftover from prior owner 3 years ago... What are other ingredients? Our pool strictly TFP pool...cya 30 FC 3 to 5ppm. Strictly liquid chlorine and some muriatic acid after a rain or aeration. Have never needed to shock the pool. Water crystal clear. Does this four in one shock have any social redeeming value for our pool... For instance if we were to go on vacation for a couple of weeks?
