Where we mention In The Swim Sodium Dichlor Chlorine Shock Granules - 25 Pounds

• Pool Shock: How to Raise Free Chlorine Safely

  Best slow-dissolve dichlor · Best for: Slow-release shock; raises FC + CYA together

• Pool Chlorine Types: How to Choose the Right One

  Best for low CYA and spas · Best for: Fast-dissolving shock that doubles as CYA booster

• How to Choose Pool Shock: Cal-Hypo vs Dichlor

  Dichlor when CYA is low · Best for: A chlorine or saltwater-pool owner who deliberately wants chlorine plus CYA and has tested CYA first.