Smart Shock is the preferred shock product for the BioGuard Care System. It oxidizes organic contaminants that cause cloudy water, musty odors and eye irritation. It also kills bacteria and algae, and clarifies the water using a filter enhancer.
I use it in both my outside 12 foot pool and the hot tub in the basement! I recommend it for perfect clarity and super cost savings, and the only product I need ! Thanks.