Pool Shock

PoolSupplyWorld offers a complete selection of Pool Shock: Cal-Hypo, Di-Chlor and Oxidizing Chlorine-Free, all designed to eliminate contaminants in your pool.

Calcium Hypochlorite (Cal-Hypo) is fast dissolving and extra strength to super chlorinate your pool water back to safe levels. Dichloro-S-Triazinetrione (Di-Chlor) is also fast dissolving and stabilized against powerful UV rays. Potassium Monopersulfate (Chlorine-Free) is a great choice for indoor pools and spas, and also compatible with bromine sanitizers

We offer a variety of swimming pool shock types in multi-packs, buckets, and bundled kits that you're sure to love! Keep your pool healthy, fresh, and sparkling with these hard-working sanitizers.

Chlorine Free

Multi-Pack Bags

Chlor-Free Multi-Pack Bags
  • Great for Hot Tubs
  • Works with Bromine
6, 12, and 24 Packs

Di-Chlor

Multi-Pack Bags

Di-Chlor Multi-Pack Bags
  • 56% Available Chlorine
  • Fast Dissolving
9, 18, and 27 Packs

Cal-Hypo

Multi-Pack Bags

Cal-Hypo Multi-Pack Bags
  • 70% Active Chlorine
  • Extra-Strength
6, 9, 18, and 27 Packs

Di-Chlor

Easy-Use Buckets

Di-Chlor Easy-Use Buckets
  • 56% Available Chlorine
  • No-Clouding
25 and 50 lb Buckets

Cal-Hypo

Zappit Buckets

Cal-Hypo Zappit Buckets
  • 70% Available Chlorine
  • Strongest Available
50 and 100 lb Buckets

Comparing Pool Shock Types

Chlor-Free Shock Di-Chlor Shock Cal-Hypo Shock
Best for: Indoor Pools & Spas Salt Pools & Liquid Chlorine Pools Tablet-Chlorine Pools
Treats Algae
Removes Organic Pollutants
Requires Pre-Mixing -
Includes CYA - -
pH Nuetral - -
Raises Calcium Hardness - -
Bromine Compatible - -