Dunno how big your pool is, mine is a 25k gal, I go through 4-5 gal at a time adding for a slam, 2-3 times a day for a few days. You can add as much as you need to to get up to SLAM level. I normally aim for about 20 chlorine level, which 4-5 gal will do. Per the slam guide, youll be doing this...