HTH™ Pool Care Shock Ultra
All-in-One Cal Hypo Pool Shock
HTH™ Pool Care Shock Ultra
All-in-One Cal Hypo Pool Shock
HTH™ Pool Care Shock Ultra is an advanced pool shock that makes weekly upkeep simple and certain.
- This all-in-1 Cal-hypo swimming pool shock treatment boosts chlorine fast, fights bacteria and algae, and helps reduce eye and skin irritation without adding cyanuric acid (CYA) that can lead to chlorine lock.
- It also helps prevent stain and scale, improves filtration, and softens water for a visibly brilliant sparkle within 24 hours.
- Safe for vinyl liners and ideal for all pool types, this dependable pool shock treatment keeps your routine strong and your water confidently clear.
Product Benefits
How to Use
How to Use
Why You Should Use This Product: Shock Ultra is a concentrated, all‑in‑one calcium hypochlorite (cal‑hypo) shock that raises chlorine levels quickly, kills bacteria and algae, prevents stains and scale, and helps restore clear, sparkling water. It does not add cyanuric acid (CYA), helping prevent chlorine lock.
Before Use: Test pool water and adjust total alkalinity and pH before application. Always add chemicals separately and keep the pump running.
Application Instructions
Use the entire contents of the bag once opened. Do not use this product in a floater or feeder.
Add this product during evening hours while the pump is running. Broadcast evenly over a wide area of the pool, preferably in the deepest part.
If any granules settle on the pool floor, brush to disperse until fully dissolved. Undissolved granules may bleach or damage pool surfaces.
Do not enter the pool until free available chlorine levels return to 1–4 ppm.
Weekly Shock Treatment
For routine maintenance or to address cloudy or dull water, shock the pool once per week.
Add 1 bag of this product per 16,750 gallons of pool water.
Algae Control
For visible algae, apply the recommended shock dosage as close to algae growth as possible. Brush algae areas immediately after treatment and repeat shock treatment if algae persists.
How to Use
Why You Should Use This Product: Shock Ultra is a concentrated, all‑in‑one calcium hypochlorite (cal‑hypo) shock that raises chlorine levels quickly, kills bacteria and algae, prevents stains and scale, and helps restore clear, sparkling water. It does not add cyanuric acid (CYA), helping prevent chlorine lock.
Before Use: Test pool water and adjust total alkalinity and pH before application. Always add chemicals separately and keep the pump running.
Application Instructions
Use the entire contents of the bag once opened. Do not use this product in a floater or feeder.
Add this product during evening hours while the pump is running. Broadcast evenly over a wide area of the pool, preferably in the deepest part.
If any granules settle on the pool floor, brush to disperse until fully dissolved. Undissolved granules may bleach or damage pool surfaces.
Do not enter the pool until free available chlorine levels return to 1–4 ppm.
Weekly Shock Treatment
For routine maintenance or to address cloudy or dull water, shock the pool once per week.
Add 1 bag of this product per 16,750 gallons of pool water.
Algae Control
For visible algae, apply the recommended shock dosage as close to algae growth as possible. Brush algae areas immediately after treatment and repeat shock treatment if algae persists.
Ingredients
Ingredients
Active Ingredient:
Calcium Hypochlorite: 56%
Other Ingredients: 44%
Total: 100%
Ingredients
Active Ingredient:
Calcium Hypochlorite: 56%
Other Ingredients: 44%
Total: 100%
Safety, Storage, and Disposal
Safety, Storage & Label Guidance
Use this product only as directed. Avoid contact with eyes and skin, and avoid breathing dust.
Wear protective eyewear and wash hands thoroughly after handling.
Do not mix this product with other chemicals.
Store in a cool, dry, well‑ventilated area away from heat or open flame.
For complete safety precautions, first aid instructions, and disposal information, always refer to the product label.
Safety, Storage & Label Guidance
Use this product only as directed. Avoid contact with eyes and skin, and avoid breathing dust.
Wear protective eyewear and wash hands thoroughly after handling.
Do not mix this product with other chemicals.
Store in a cool, dry, well‑ventilated area away from heat or open flame.
For complete safety precautions, first aid instructions, and disposal information, always refer to the product label.
Frequently Asked Questions
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What makes HTH Shock Ultra different from standard pool shock?
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What makes HTH Shock Ultra different from other HTH shock products?
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How quickly does HTH Shock Ultra dissolve in pool water?
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How do I use HTH Shock Ultra to clear a severely green pool?
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Does HTH Shock Ultra work faster than regular pool shock?
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Is HTH Shock Ultra safe for vinyl-liner and saltwater pools?
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How much HTH Shock Ultra do I need for my pool?
Reviews
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Quick Pool Tips
Always read product label directions prior to using and use only as directed
Always add chemicals to pool water, never the other way around
Never add chemicals to pool water when people are in the pool
Never mix products together
Always store pool products in a cool, dry location and out of direct sunlight
