HTH Pool Care Shock Advanced — Granules, 1 lb — Pool Shock Treatment for Weekly Use

HTH Pool Care Shock Advanced for Swimming Pools, Prevents Bacteria & Algae, Cal Hypo Formula, Pool Chemicals, 1 lbs

HTH® Pool Care Shock Advanced 1lb is the powerful 4-in-1 formula with Cal Hypo that kills and prevents bacteria and algae as well as reduces chlorine odor and irritation for crystal clear, healthy water. Traditional chlorine products contain cyanuric acid (CYA). When too much CYA builds up, it can cause over-stabilization or chlorine lock and cloud your water. The fast-acting, fast-dissolving Cal Hypo formula in HTH® Pool Care Shock Advanced 1lb provides chlorination without adding extra CYA for a beautiful sparkle all season. This product is great for all swimming pool types and won't fade your pool liner.

How To Use HTH® Shock Advanced: Follow the on-pack instructions according to your pool size to add HTH® Shock Advanced directly to swimming pool water or skimmer. Make sure to use a clean, dry scoop. For best results, apply HTH® Shock Advanced as part of your weekly pool care routine to keep free available chlorine levels between 1 and 4 ppm.