POOLACC Pro-Grade Chlorine Pool Shock 68% Cal-Hypo Granular — 12 x 1 lb Pack, Fast-Acting Oxidizer

POOLACC Pro-Grade Chlorine Pool Shock is a 68% calcium hypochlorite granular sanitizer sold as twelve 1-lb packets, formulated to rapidly raise free chlorine and help clear and sanitize pool water.

Designed for routine and shock treatments, this professional-strength cal-hypo formula delivers a high available chlorine concentration without adding cyanuric acid (CYA). Packaged in twelve single-pound bags, it’s convenient for accurate dosing and storage, and the granular format dissolves quickly when properly pre-dissolved or diluted to avoid bleaching sensitive liners.

How does this shock work to clear cloudy or contaminated pool water?

Calcium hypochlorite supplies a concentrated dose of free chlorine that oxidizes organic contaminants and kills common bacteria and algae when used per label directions. It’s intended as a shock treatment to rapidly raise chlorine levels and restore clarity when combined with filtration and circulation.

• Contains 68% available chlorine for fast-acting oxidation.
• Granular form dissolves for even distribution when pre-diluted.
• Use one 1-lb bag per 10,000 gallons to raise chlorine to ~5–10 ppm.
• Does not introduce cyanuric acid, avoiding potential chlorine lock.

Is this product safe for different pool types?

POOLACC’s cal-hypo shock is compatible with vinyl-lined, plaster, fiberglass, in-ground, above-ground, and saltwater pools when used correctly. To protect liners and surfaces, always pre-dissolve the granules in a bucket of water and pour the solution around the pool perimeter rather than dumping dry granules directly into the water.

• Suitable for saltwater systems and traditional chlorine pools.
• Pre-dissolve to reduce bleaching risk to vinyl or painted surfaces.
• Avoid mixing with other chemicals or acids to prevent hazardous reactions.

How do I dose and apply the twelve 1-lb bags?

Each 1-lb bag is measured for simple dosing: add one bag per 10,000 gallons to produce approximately 5–10 ppm free chlorine for shock-level treatment. For routine maintenance or heavier contamination, follow incremental dosing and retest water, running circulation and filtration during and after treatment.

• One bag per 10,000 gallons yields ~5–10 ppm free chlorine.
• For algae or heavy contamination, repeat treatments as needed after testing.
• Run pump and filter continuously during treatment; backwash if necessary.
• Store unopened bags in a cool, dry place away from organic materials.

What precautions should I take when handling cal-hypo shock?

Calcium hypochlorite is a strong oxidizer—handle with protective gloves and eye protection and never mix with acids, pool algaecides containing metals, or other chemicals. Ensure good ventilation when dissolving granules, add product to water (not water to product), and rinse tools and containers thoroughly after use.

• Wear gloves and eye protection while handling granules.
• Always pre-dissolve in a plastic or stainless container—never in metal.
• Keep away from heat, direct sunlight, and combustible materials.
• Follow local disposal rules for chemical containers and residues.

Who this product is for: POOLACC Pro-Grade Chlorine Pool Shock is aimed at pool owners, maintenance professionals, and property managers who need a reliable, high-strength sanitizer for periodic shock treatments and fast oxidation. It’s particularly useful for those who prefer a granular cal-hypo option that won’t raise cyanuric acid levels and who want individually packaged doses for easier handling and storage. If you have vinyl liners, follow the pre-dissolving guidance to protect your surfaces and always test water chemistry before and after treatment.