16 products
Shock for Pools – Shocks & Oxidizers Collection
Keep your pool water sparkling clean and safe with our premium selection of shock for pools. Whether you need a powerful oxidizer for weekly maintenance or a fast-acting shock to clear cloudy water, this collection has the right solution to keep your pool fresh and swim-ready. Browse our top-quality chlorine and chlorine-free pool shocks designed to eliminate contaminants, control algae, and maintain crystal-clear water all season long.
Why Shocking and Oxidizing Your Pool Water Is Essential
Even the cleanest pools collect invisible contaminants: sweat, sunscreen, oils, cosmetics, and organic matter. Left unchecked, these create cloudy water, unpleasant odors, and the perfect breeding ground for bacteria and algae. That’s why shocking and oxidizing are critical steps in every pool maintenance plan.
This collection features Benchmark Pool Supply’s full range of chlorine shocks, non-chlorine oxidizers, and professional treatments. These products come from trusted brands like Natural Chemistry, GLB, and Poolife. You can find the right solution here, whether you’re clearing a green pool, recovering from a heavy swim day, or keeping your pool clear all season.
👉 For steady, daily sanitation, pair your shocks with Chlorine Tablets. For algae prevention, add a Phosphate Remover.
What Is Pool Shock and Why It Matters
Pool shock is a concentrated form of chlorine designed to rapidly sanitize and oxidize contaminants. It’s applied weekly or as needed to restore water quality. Unlike chlorine tablets, which dissolve slowly for continuous protection, shock works fast to:
- Destroy bacteria and microorganisms
- Eliminate chloramines (the cause of strong “chlorine smell”)
- Restore water clarity after heavy use or storms
- Kill algae blooms before they spread
Types of Pool Shock & Oxidizers Explained
Calcium Hypochlorite Shock (Cal Hypo)
- High-strength chlorine (65–75%)
- Fast-dissolving and powerful oxidizer
- Perfect for green water or heavy contamination
- Popular choice: Natural Chemistry 25LB Pro Series Cal Hypo Shock
Dichlor Shock for Routine Pool Care
- Stabilized chlorine with cyanuric acid (CYA)
- Gentle on vinyl liners and pool finishes
- Effective for weekly pool maintenance
- Example: Poolife TurboShock
Non-Chlorine Oxidizers for Pools
- Oxidizes organic material without chlorine
- Ideal for indoor pools or chlorine-sensitive swimmers
- Restores clarity without raising chlorine levels
When to Shock a Swimming Pool for Best Results
- Weekly: Prevent buildup of contaminants
- After storms: Rain and debris introduce organics
- Heavy bather load: Parties, events, or hot days increase demand
- Visible algae: Early treatment stops outbreaks fast
- Opening/Closing: Essential at the start and end of each season
Step-by-Step Guide: How to Shock a Pool Properly
- Test and balance water chemistry (pH 7.2–7.6, TA 80–120 ppm).
- Choose the right shock: Cal Hypo for strong treatment, Dichlor for weekly care, Non-Chlorine for indoor/special cases.
- Broadcast the shock across the deep end at night or when the pool is not in use.
- Run the pump for 6–8 hours for even circulation.
- Test chlorine levels before swimming — wait until free chlorine is between 1–4 ppm.
👉 For a full sanitation plan, combine weekly shocks with daily chlorine tablets to maintain balanced chlorine levels.
Featured Pool Shock & Oxidizer Products
See more in Shocks & Oxidizers or explore our full line of Pool Chemicals.
Frequently Asked Questions (FAQ) – Pool Shock & Oxidizers
How often should you shock a swimming pool?
Most pools need shocking once a week. Increase frequency after storms, pool parties, or when water looks cloudy or smells strongly of chlorine.
What’s the difference between pool shock and chlorine tablets?
- Pool Shock: Quick, high-dose sanitizer for oxidation and algae control.
- Chlorine Tablets: Slow-dissolving, steady daily sanitation. See Chlorine Tablets.
How long after shocking a pool can you swim?
Wait until free chlorine levels are 1–4 ppm, usually 8–24 hours depending on product and dosage.
Which type of pool shock should I use: cal hypo or dichlor?
- Cal Hypo: Strong, fast, unstabilized chlorine, good for green or cloudy water.
- Dichlor: Stabilized, gentler, ideal for weekly pool maintenance.
Is non-chlorine pool shock effective?
Yes — it’s excellent for oxidizing organic waste without raising chlorine, especially in indoor pools. But it doesn’t sanitize, so pair it with chlorine tablets.
When is the best time of day to shock a pool?
Shock your pool at night or in the evening, since sunlight quickly breaks down chlorine and reduces effectiveness.
Can pool shock kill algae?
Yes. Pool shock is highly effective for treating algae, especially when used early. Use cal hypo for green water and combine with algaecides for prevention.
Do I need to shock my pool when opening or closing?
Yes. Shocking at pool opening restores clean, safe water, while shocking at closing prevents bacteria and algae growth during the off-season.
