Pool Shock | Cal Hypochlorite | 50 lb | 1 Pail | First Choice

First Choice Black Out Shock is a 50 lb pail designed to quickly raise chlorine levels and clear up cloudy water in residential pools. Use after heavy swimming, rain, or when your pool needs a reset. This fast-acting pool shock delivers a strong chlorine boost to sanitize and oxidize contaminants, helping you restore inviting, crystal-clear water in record time.

Whether you’re dealing with a post-storm haze, season-opening algae concerns, or a crowded weekend, Black Out Shock targets the chlorine demand that builds up during heavy use. The result is improved water clarity, reduced odors, and a streamlined maintenance routine that keeps your pool ready for swimmers.

• Rapid pool shock delivery that sanitizes and oxidizes oils, lotions, and organics
• Clears cloudy water fast and restores water clarity after rain or high swimmer loads
• Large 50 lb pail for cost-effective coverage on bigger pools
• Easy to apply: broadcast around the pool and brush for even distribution
• Supports regular pool maintenance and quick resets between pool parties

Refresh your pool with First Choice Black Out Shock and enjoy clearer water and more comfortable swims this season. Order today to get your pool back in top condition.