DryTec 1-1901 Calcium Hypochlorite Pool Shock, 1-Pound – Fast-Acting Pool Sanitizer

Overview

DryTec 1-1901 Calcium Hypochlorite Pool Shock arrives in a compact 1-pound bag and is designed to deliver quick-acting sanitization for routine chlorination and periodic shock treatments. With 68% calcium hypochlorite, this product supports water clarity when used as directed and paired with a dependable test kit.

What to expect in real-life use

When applied correctly, you may notice clearer water and a refreshed pool feel. The product is formulated to release available chlorine in the 5–10 ppm range during shock dosing, helping address temporary algae or contaminants after heavy use or adverse weather events.

How to use

• Open the bag and use the entire contents after opening.
• For best dispersion, broadcast evenly over a wide area in the deepest section of your pool.
• Run the pool filter during application and wait about 30 minutes for dispersal.
• After application, test free available chlorine with a reliable test kit and follow label directions for any follow-up treatments.

Dosing guidelines and maintenance

• One bag treats up to 10,000 gallons of water; this provides 5–10 ppm available chlorine when used for shock treatment.
• Maintain water balance: pH 7.2–7.6, total alkalinity 60–120, and calcium hardness above 200 ppm.
• Regularly test and adjust with compatible pool care products to support swimmer comfort and water clarity.

Quality and safety notes: Do not enter the pool until the free chlorine residual is within 1–4 ppm for each treatment period, and follow label directions for any additional dosing.