Hero image 0 of Dry Tec 68% Calcium Hypochlorite Granular Swimming Pool Shock - 12 lb, 0 of 3
Dry Tec 68% Calcium Hypochlorite Granular Swimming Pool Shock - 12 lb
Key item features
- Powerful Sanitizer: Dry Tec 68% Calcium Hypochlorite granular shock effectively kills bacteria, controls algae, and destroys organic contaminants in swimming pools.
- Vinyl-Safe Formula: Unlike some alternatives, this formula is safe for vinyl pool liners, preventing bleaching and allowing for even broadcasting across the pool surface.
- Water Balance: For optimal performance, maintain pH between 7.2-7.6, total alkalinity 60-120 ppm, and calcium hardness above 200 ppm.
- Shock Treatment: Apply one bag per 10,000 gallons weekly, or as needed, to achieve 5-10 ppm available chlorine, especially after heavy use or storms.
- Application Instructions: Add the recommended dosage during evening hours with the pump running, broadcasting evenly over the deepest part of the pool.
- Proper Storage: Keep the product dry in its tightly closed container in a cool, dry, well-ventilated area, away from heat or open flame.
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Specs
- Chemical standard typeShock
- Pool chemical typeSwimming Pool Shock
- FormGranules
- Rec. useSwimming Pool
- Weight12 lb
- Piece count12
Current price is USDNow $59.96
You save $15.00
was $74.96$74.96
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About this item
Product details
Our Dry Tec 68% Calcium Hypochlorite formula works similarly to Sock-It, however, Dry Tec does not run the risk of bleaching vinyl pool liners. This allows for the shock to be evenly broadcast over your pool's surface. Kills bacteria, controls algae and destroys organic contaminants in pools.
Note: Do Not Mix!
How to Use: Use entire contents of the bag when opened. If any granules settle to the bottom of the pool use brush to disperse. Add the recommended dosage of this product during evening hours while the filter pump is running. When adding this product to your pool, broadcast the product evenly over a wide area in the deepest part of the pool. If any granules settle to the bottom of the pool use brush to disperse.
- WATER BALANCE: For best product performance, swimmer comfort, and crystal clear water: Maintain pH in the range of 7.2 to 7.6. Maintain total alkalinity in the range of 60 to 120 parts per million (ppm). Maintain calcium hardness above 200 ppm. Use a reliable test kit that measures all these ranges. Use our pool care products to make adjustments. Follow label directions for each product. Do not enter the pool until the free available chlorine residual is 1-4 ppm for each of the below noted water treatment applications.
- OPENING YOUR POOL: For best results, see the "WATER BALANCE" section above before treatment. Always adjust and maintain pH in the 7.2 to 7.6 range. Follow "SHOCK TREATMENT" directions on this package. Allow 30 minutes for the product to disperse. Test free available chlorine residual with a pool test kit. Repeat treatment as needed.
- ROUTINE CHLORINATION: For best results, see the "WATER BALANCE" section above before treatment. Throughout the pool season, adjust and maintain pH at 7.2 to 7.6. check available chlorine with a suitable test kit.
- SHOCK TREATMENT/SUPERCHLORINATION: For best results, see "WATER BALANCE" and "HOW TO USE" section above before treatment. Every 7 days, or as necessary to prevent pool problems, shock treat/super chlorinate the pool by adding one bag of this product per 10,000 gallons of water to provide 5 to 10 ppm available chlorine. Additional shock treatments may be required to correct problems that are caused by visible algae, high bathing loads, heavy wind and rainstorms. Additional shock treatments may also be required to correct problems such as unpleasant odors and eye irritation. Check the available chlorine with a suitable test kit.
- STORAGE AND DISPOSAL: Keep this product dry in its tightly closed container when not in use. Store in a cool, dry, well-ventilated area. Keep away from heat or open flame. Nonrefillable container. Do not reuse or refill this container. Rinse empty container thoroughly with water to dissolve all material prior to disposal. Offer for recycling if available. Do not contaminate food or feed by storage or disposal or cleaning of equipment.
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Warranty
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Customer ratings & reviews
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Showing 1-3 of 15 reviews
Nov 30, 2025
DLD
Item details
Sold and shipped byFour Seasons Pool SupplySize: 1 lbs
5 out of 5 stars review
Verified Purchase
This Drytec product was shipped and arrived very quickly. It was nicely packaged with no rips or tears. The directions are easy to understand and I would definitely recommend this to all who need a disinfectant for the pool or other things. All in all a great product once again! 🙂
Incentivized Review
Helpful?3KG1F8DN9Y1G439187197
Aug 28, 2025
Mark
Item details
Sold and shipped byFour Seasons Pool SupplySize: 1 lbs
5 out of 5 stars review
Verified Purchase
Dry Tec to disinfect water in an emergency
I bought this product (Dry Tec 68% Calcium Hypochlorite Granular Swimming Pool Shock - 1 lb) to keep on hand to disinfect water to drink in an emergency. Easy to store and use- Dry Tec is a brand I have used in the past and trust. A little pricey for what it is but they do ship it right to your door and I did not need a 5-gallon bucket of the stuff. Yes- I would recommend Dry Tec in the 1lb size. Good to have in an emergency for water you might not be able to boil.
Incentivized Review
Helpful?3KG1F8DN9Y1G439187197
Sep 27, 2025
ERIC
Item details
Sold and shipped byFour Seasons Pool SupplySize: 12 lbs
5 out of 5 stars review
Verified Purchase
It price, and it works 💪.
Helpful?3KG1F8DN9Y1G439187197
