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Pro-Grade Pool Shock - Doheny's Pool Supplies

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Pool Shock Treatment

Pool shock is an essential chemical treatment for keeping your pool water clean, balanced, and safe for swimmers. Adding a concentrated dose of chlorine or non-chlorine shock can help remove bacteria, algae, and organic debris that regular chlorine treatments can't handle alone. Whether you are shopping for an inground pool shock treatment or an above ground pool shock treatment, Doheny's has the best professional quality pool shock that will help you keep your pool clean and clear all season long!

What is the best pool shock to buy?

Calcium hypochlorite shock, commonly called cal-hypo or super shock, is a fast-dissolving and highly effective option for primary pool shock treatments. Typically sold in granular form, it's excellent at eliminating bacteria, algae, and other harmful contaminants while boosting chlorine levels to keep your pool clean and safe. If you're dealing with an unexpected algae bloom, cal-hypo shock is the best shock to restore clarity. It is one of the best chlorine shocks for pools!

  • Doheny's Super Shock. A great value, this fast-acting pool shock treatment features 68% calcium-hypochlorite as the active ingredient to help clear the most contaminated pools. Recommended dosage: 1 lb/10,000 gal.

Di-chlor shock is a stabilized granular chlorine that combines chlorine with cyanuric acid. While it offers moderate oxidizing power, it effectively eliminates bacteria and algae. Unlike calcium hypochlorite shock, di-chlor shock lowers the pool's pH, so pool owners should be ready to adjust pH levels after use. It's a versatile option, serving as both a primary sanitizer and a shock treatment in one. Because di-chlor shock is gentler than cal-hypo shock, it's an excellent choice for vinyl-liner pools and other delicate pool surfaces. It's also highly compatible with saltwater and liquid chlorine-treated pools. Its stabilized formula protects it from degradation caused by the sun's UV rays, making it a great outdoor pool shock treatment.

  • Doheny's Di-Chlor Chlorine Shock. Super-chlorinated pool shock with 56% available chlorine to kill algae and rid your pool of unsightly algae spots. Ideal for use in vinyl lined, fiberglass or colored plaster surface pools. Recommended super-chlorination dosage: 1 lb/10,000 gal.

Oxidizing shock is a chlorine-free alternative to traditional shocks. It doesn't cause eye or skin irritation, making it a comfortable choice for all swimmers. For optimal pool maintenance, use oxidizing shock weekly, in combination with a chlorine shock (on separate days), to keep your pool clean and sparkling all season long.

  • Doheny's Oxidizing Shock. Chlorine-free pool shock so you can start swimming in only 15 minutes. The active ingredient, potassium monopersulfate, effectively keeps water clear while controlling contaminants. Safe for all pool surfaces. Recommended dosage: 1 lb/10,000 gal. every 10 days.

Frequently Asked Questions about Pool Shock

Q. How much pool shock should I add?

A. For each of our Doheny's Pro-Grade Shocks, use 1lb per 10,000 gallons. In the case of an algae bloom, use double the dosage, or 2lbs per 10,000 gallons instead.

Q. Which type of pool shock should I use?

A. Various factors such pool type and what sanitizer you use can help you determine which pool shock is best to use. Check out our blog about the different types of pool shock to learn more.

Q. When should I shock my pool?

A. Weekly/as needed, after heavy pool usage, after rain & storms, when algae is present, and during opening & closing. Shock your pool at night when possible, as this helps to prevent any UV burnoff from the sun and allows you to swim by the next morning.

Q. Is it safe to swim after using pool shock?

A. No, for most standard shock treatments, you need to wait until chlorine levels have gone back to normal. This can take between 12-24 hours. Premature entry can lead to breathing, eye, digestive, and skin problems, which all require immediate medical assistance. However, since oxidizing shock is chlorine-free, you can swim after just 15 minutes.

Q. How do I know if my pool shock is working?

A. Test your chlorine levels to check the free chlorine levels after shocking to see if they have risen. Over time, they should stabilize. Shock treatment also eliminates chloramines, so see if you notice a reduction in that strong chlorine odor. Finally, look to see if your pool appears to be clearer, as the shock should help to break down contaminants, algae, and organic debris.

Q. Why is my pool still cloudy after shocking?

A. Your filtration system may need to run from 24-48 hours after the treatment to fully clear debris. After running the filtration system, dead algae or other organic debris may need to be vacuumed up as well to fully clear the pool. If the incorrect shock dosage was used, this could disrupt the chemical balance, making the pool cloudy. A lack of proper water circulation to evenly distribute the shock could also lead to the pool continuing to be cloudy. If the cloudiness persists, test chemical levels and adjust the pool's pH, alkalinity, and chlorine to the proper levels.

Q. How should I store pool shock safely?

A. Storing pool shock, like all pool chemicals, is paramount for the safety of you and those around you, as well as ensuring the longevity of the chemicals. Check out our blog on properly storing pool chemicals to learn more.

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