• DryTec Calcium Hypochlorite Chlorinating Shock Treatment for Swimming Pools, 1-Pound (Pack of 24)

    HOW TO USE: Use entire contents of 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 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 product to disperse. Test free available chlorine residual with a pool test kit. Repeat treatment as needed. ROUTINE CHLORINATION: For be...

    • Brand: DryTec
    • ASIN: B00BGNLUV8
    • UPC: 731872555526

  • Zappit 73% Cal Hypo Pool Shock - Calcium Hypochlorite Super Shock 50lb

    The Zappit 73 Pool Shock is 73% Calcium Hypochlorite with 70% available chlorine. This granular formula comes in a bucket and saves you time and money by quickly dissolving to destroy waste, algae, and bacteria in your swimming pool. This powerful shock treatment is great for spring start up, gives a quick chlorine boost, and helps to balance your pool water chemistry. One pound treats 16,500 gallons of pool water. Use the Zappit 73 Shock Treatment in your swimming pool for more fresh and clear pool water. 1 50 lbs bucket.

    • Brand: Zapp It
    • ASIN: B01F44CVMQ
    • UPC: 088625841451

  • In The Swim Chlorine Pool Shock - 24 X 1 lb. Bags

    This powerful chlorinated shock treatment is great for Spring start-up and ideal for a quick chlorine boost when fast-action is needed! 68% Calcium Hypochlorite. Compare to Sock It, Burn Out, Super-Chlorinator and Power Powder. Weekly Dosage: 1 lb. per 10,000 gallons. Dilute with water before before evenly broadcasting in to swimming pool water.

    • Brand: In The Swim
    • ASIN: B003BPNHV0
    • UPC: 792439324788

  • In The Swim Chlorine Pool Shock - 12 X 1 lb. Bags

    This powerful chlorinated shock treatment is great for Spring start-up and ideal for a quick chlorine boost when fast-action is needed! 68% Calcium Hypochlorite. Compare to Sock It, Burn Out, Super-Chlorinator and Power Powder. Weekly Dosage: 1 lb. per 10,000 gallons. Dilute with water before before evenly broadcasting in to swimming pool water.

    • Brand: In The Swim
    • ASIN: B002WKQ3IE

  • Rx Clear Stabilized Granular Chlorine | One 50-Pound Bucket | Use As Bactericide, Algaecide, and Disinfectant in Swimming Pools and Spas | Slow Dissolving and UV Protected

    Compared to Pace, Bioguard and Sun the Rx Clear brand provides the same performance at a much lower cost.Item Details:13 pound bucket of granular chlorineRx Clear granular chlorine is 99% sodium DichlorDichlor resists UV light, lasting longer than other types of chlorinepH neutral, saving time and money on corrective chemicalsIt is 100% soluble-- Can be added directly to skimmer with no calcium residue1 oz treats 5,000 gallons daily

    • Brand: Rx Clear
    • ASIN: B00OM8E7NC
    • UPC: 078399252508

  • In The Swim Cal-Chlor Pool Chlorine Granules - 50 lbs.

    Our economically priced, fast-acting Calcium Hypochlorite sanitizing granules provide 65% available chlorine for hard-hitting immediate results!Our non-stabilized formula is ideal for super shocking or everyday use. Comparable to HTH, Pulsar and Chloryte. Dosages: For unstabilized pools, use 6-8 oz. per 10,000 gallons daily. For stabilized pools, use 3-4 oz. per 10,000 gallons every other day. If using as a weekly shock, use 16oz. per 10,000 gallons. To prevent bleaching and cloudy water, it is highly recommended that you pre-dissolve granules in a bucket of water before evenly dispersing throughout the pool. NOTE: A valid phone number is required to ship this item, you must be present to sign for the delivery.

    • Brand: In The Swim
    • ASIN: B002WKS6D4

  • Rx Clear Mega Shock | 73% Calcium Hypochlorite | Kills Algae in Swimming Pools | One Pound Bags | 12 Pack

    A powerful, highly dense chlorinated shock treatment that will remove the green algae from your swimming pool water by just following the recommended dosage of this product. Be sure to pre-dissolve this powdered substance in a bucket of water before dispensing it around the perimeter of your swimming pool while your pump is running.

    • Color: 12 Pack
    • Brand: Rx Clear
    • ASIN: B00O92NRGO
    • UPC: 617215599535

  • Doheny's Super Pool Shock 24 x 1 Lb Bags

    Doheny's Super Shock chlorine shock for your swimming pool is fast-acting and features calcium-hypochlorite as the active ingredient to help clear the most contaminated pools. A 2-3 year shelf life for each bag makes this a convenient value. Dosage: 1 lb. per 10,000 gallons to provide dosage of 7.5 ppm free available chlorine. Instructions for use: Dilute shock in bucket of water. With pump running, broadcast evenly at deep end. Use brush to disperse any particles that have settled to bottom. Let pump run for 6-8 hours minimum after applying. We recommend applying shock at night and letting pump run overnight. Do not re-enter pool until chlorine is 1-4 ppm.

    • Brand: Doheny's
    • ASIN: B0051BI6UE
    • UPC: 660174102933

  • In The Swim Y7920 Super Pool Shock 24 x 1 lb. Bags

    STRONGEST START-UP AND ALGAE-KILLING POOL SHOCK!Powerful, fast dissolving, chlorinated shock treatment is ideal for messy Spring clean-ups and stubborn algae blooms in swimming pools. 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. Use entire contents when opened. If any granules settle to the bottom of the pool, use brush to disperse. 73% Calcium Hypochlorite. Handy 1 pound bags!Dosage:1 lb. per 10,000 gallons.

    • Brand: In The Swim
    • ASIN: B003BPOX8Q

  • DryTec 23224-06 Extra Shock Treatment for Swimming Pool Chlorine Bag (Pack of 6), 1 lb.

    Dry Tec 23224-06 6 Pack Extra Shock dissolves faster! An extra-powerful start-up and maintenance shock that helps to improve the appearance of your pool by removing and preventing algae growth. When used as directed, Dry Tec Extra Shock removes organic waste and raises chlorine level, producing sparkling, clean swimming pool water. Kills bacteria, controls algae, destroys organic contaminants and restores crystal clarity. This is the ideal product for a super-fast acting chlorine boost to give your pool shocking clarity. 73% Calcium Hypochlorite.

    • Color: White
    • Brand: DryTec
    • ASIN: B00WLWMLQG
    • UPC: 034261923273

  • hth Pool Shock Super Shock Treatment 4-in-1 12 count (52016)

    hth is here to help with our 4-step pool care and 3-step care program. Our 4-step color-coded system makes it easy to find the hth pool care products you need to enjoy sparkling, blue water all season. Our complete line of hth spa products ensures that you have crystal clear water so you can relax in your spa all year round. If you enjoy hth, check out other products from Lonza such as Leisure Time, Applier Biochemist, Poolife, and GTC.

    • Color: White
    • Brand: HTH
    • ASIN: B07895QQ3L
    • UPC: 073187520166

  • Pool Essentials Shock Treatment 6 Pack (1 lb Bags)

    Pool Essentials shock is an economic shock for all pool types. Designed for easy application through the Skimmer or directly into the deep end of the pool. Ideal for use at any time through the season.

    • Brand: Pool Essentials
    • ASIN: B00PZZG1Z8
    • UPC: 014746644145

  • Clorox Pool&Spa Shock XtraBlue 12 Pack (1 lb Bottles)

    Clorox pool spa shock xtra blue will shock, oxidize, buffer and clarify your pool's water. It also kills bacteria and contains blue algae killing crystals. With the easy pour bottle, use what you need and close the bottle until the next application.

    • Color: -
    • Brand: Clorox
    • ASIN: B00PZZFJN8
    • UPC: 810821021630

  • hth Pool Shock Super Shock Treatment 6 count 6lbs (52008)

    HTH Super Shock Treatment Bag is a powerful shock treatment containing 52% chlorine that provides clear results in 24 hours for quick, hassle-free use. Specially designed to kill bacteria or algae and ideal for all pool surfaces. Available in a 1 pound size and sold in a 6 pack.

    • Brand: Arch Chemical
    • ASIN: B01DP67F9E
    • UPC: 073187520081

  • Rx Clear Super Shock for Swimming Pools | 68% Calcium Hypochlorite | Kill Pool Algae | One Pound Bags | 12 Pack

    Super Shock's 68% Calcium Hypochlorite formula works similarly to Sock-It, however Super Shock does not run the risk of bleaching vinyl pool liners. This allows for Super Shock to be evenly broadcast over your pool's surface. Dosages Clear Water: 1 lb. Super Shock per 10,000 gallons of pool water at night Green Water: 3 lb. Super Shock per 10,000 gallons of pool water 12 Packets of 1 Lb Bag

    • Brand: Rx Clear
    • ASIN: B00O92OHEK
    • UPC: 617215599559

  • Ultima 40542 T.K.O. Chlorinating Shock Treatment for Swimming Pools, 1-Pound

    Ultima T.K.O. is a fast acting, quick-dissolving multi-purpose pool shock that sanitizes, clarifies, prevents algae and shock treats your pool. Customers love how quickly Ultima T.K.O. works. A 73% Cal Hypo pool shock, one easy-to-use 1 lb. pouch treats 15,000 gallons, destroying bacteria quicker than any other shock. T.K.O. shock provides powerful protection against stubborn algae blooms all season long, creating safe and clean pool water. Great for spring start-ups. 73% Calcium Hypochlorite.

    • Brand: Ultima
    • ASIN: B009S85M8A
    • UPC: 785336405421

  • Clorox Pool&Spa Shock XtraBlue 6 Pack (1 lb Bottles)

    Clorox Pool&Spa shock XtraBlue will shock, oxidize, buffer & clarify your pool's water. It also kills bacteria & contains blue algae killing crystals. With the easy pour bottle, Use what you need & close the bottle until the next application.

    • Brand: CLOROX Pool&Spa
    • ASIN: B00PZZFJK6
    • UPC: 810821021623

  • BioGuard Burnout 73 (1 lb) (6 Pack)

    Burnout 73 is a super-chlorinator for swimming pools. It has the highest percentage of calcium hypochlorite of all the BioGuard shocks. Product Information: Calcium Hypochlorite 73% Other Ingredients 27% One bag treats 16,500 gallons of swimming pool water One of the strongest shocks on the market Add this product at night or when the pool is not in use Shock at least once a week during periods of heavy use or when water temperature is above 80 degrees fahrenheit Keep your pump and filter running after application Do not enter the swimming pool until chlorine residual is below 4.0 or less as measured by a proper test kit

    • Brand: BioGuard
    • ASIN: B01MYFKBJM
    • UPC: 017541648820

  • GLB Pool and Spa Products GLB71428A Calcium-Hypochlorite Super Charge Shock, 1 lb

    Glb super charge chlorine shock is 100% calcium Hypochlorite (65% available chlorine) granular formulated especially for super chlorination swimming pool shock treatments.

    • Brand: GLB Pool & Spa Products
    • ASIN: B004DEOPFU
    • UPC: 785336714288

  • In The Swim Cal-Chlor Pool Chlorine Granules - 25 lbs.

    Our economically priced, fast-acting Calcium Hypochlorite sanitizing granules provide 65% available chlorine for hard-hitting immediate results!Our non-stabilized formula is ideal for super shocking or everyday use. Comparable to HTH, Pulsar and Chloryte. Dosages: For unstabilized pools, use 6-8 oz. per 10,000 gallons daily. For stabilized pools, use 3-4 oz. per 10,000 gallons every other day. If using as a weekly shock, use 16oz. per 10,000 gallons. To prevent bleaching and cloudy water, it is highly recommended that you pre-dissolve granules in a bucket of water before evenly dispersing throughout the pool. NOTE: A valid phone number is required to ship this item, you must be present to sign for the delivery.

    • Brand: In The Swim
    • ASIN: B002WKJ6IS