GLB 71442A Calcium Hypochlorite Pool Shock – 1 lb | Fast-Acting Sanitizer & Clarifier

Overview

GLB 71442A Calcium Hypochlorite Pool Shock delivers fast acting sanitation for residential pools. This 1-pound packet provides a high concentration of calcium hypochlorite and is free of cyanuric acid, helping keep water clear without leaving residue when used as directed.

What makes it effective

This pool shock is designed to work quickly to sanitize water across different pool surfaces. Its formulation aims to avoid over-stabilizing your water while supporting clearer, more inviting water between routine maintenance cycles. The product can be used as a multi purpose shock treatment, clarifier, and algae control booster when used according to the label.

• 9 to 18 ounces per 10,000 gallons to provide 5 to 10 ppm available chlorine
• 73% Calcium Hypochlorite for robust sanitation power
• No cyanuric acid added, helping to keep water chemistry simpler
• Fast-acting action that helps address contaminants and cloudiness
• Works on all pool surfaces and is designed to leave no residue when used as directed

How to use for best results

Before dosing, test water and set target ranges for pH and alkalinity. For shock treatment, add the product gradually with the pump running to promote circulation. Avoid mixing with strong acids or other cleaners.

• Target pH: 7.2–7.6
• Maintain total alkalinity: 60–120
• Dosage: 9–18 oz per 10,000 gallons

Real world use and benefits

Pool owners may notice clearer water and improved chlorine perception after a shock treatment, especially after heavy usage, rain events, or periods of windblown debris. The product’s residue-free profile supports a clean feel without adding extra buildup when used as directed.

Safety, storage, and care

Store in a cool, dry place away from moisture and incompatible chemicals. Handle with care and follow all label directions to minimize exposure and maximize effectiveness.