HTH™ Pool Care Shock Advanced
Pool Shock for Algae
HTH™ Pool Care Shock Advanced
Pool Shock for Algae
HTH™ Shock Advanced pool shock helps you take on cloudy, unbalanced water with confidence.
- This powerful 4-in-1 swimming pool shock treatment kills bacteria, prevents algae, reduces chlorine odor, and restores clarity fast.
- With Cal Hypo technology, it delivers a sparkling clean pool without adding cyanuric acid, so you can enjoy a healthy, inviting swim all season long.
- For best results, shock weekly with HTH™ Shock Advanced.
HTH™ is here to help giving you the confidence to keep your water clear, safe, and always swim ready. You're all clear with HTH™.
Product Benefits
How to Use
How to Use
Why You Should Use This Product: Shock Advanced is a fast‑acting, multi‑functional calcium hypochlorite (cal‑hypo) shock that kills bacteria and algae, clears cloudy water, and helps restore visible water clarity. It does not add cyanuric acid (CYA), helping prevent chlorine lock and overstabilization.
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 with the filter pump 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 oxidation and to help prevent water problems, shock the pool at least once per week.
Add 1 lb (1 bag) of this product per 13,500 gallons of pool water.
How to Use
Why You Should Use This Product: Shock Advanced is a fast‑acting, multi‑functional calcium hypochlorite (cal‑hypo) shock that kills bacteria and algae, clears cloudy water, and helps restore visible water clarity. It does not add cyanuric acid (CYA), helping prevent chlorine lock and overstabilization.
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 with the filter pump 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 oxidation and to help prevent water problems, shock the pool at least once per week.
Add 1 lb (1 bag) of this product per 13,500 gallons of pool water.
How to Use
Why You Should Use This Product: Shock Advanced is a fast‑acting, multi‑functional calcium hypochlorite (cal‑hypo) shock that kills bacteria and algae, clears cloudy water, and helps restore visible water clarity. It does not add cyanuric acid (CYA), helping prevent chlorine lock and overstabilization.
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 with the filter pump 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 oxidation and to help prevent water problems, shock the pool at least once per week.
Add 1 lb (1 bag) of this product per 13,500 gallons of pool water.
How to Use
Why You Should Use This Product: Shock Advanced is a fast‑acting, multi‑functional calcium hypochlorite (cal‑hypo) shock that kills bacteria and algae, clears cloudy water, and helps restore visible water clarity. It does not add cyanuric acid (CYA), helping prevent chlorine lock and overstabilization.
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 with the filter pump 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 oxidation and to help prevent water problems, shock the pool at least once per week.
Add 1 lb (1 bag) of this product per 13,500 gallons of pool water.
Ingredients
Ingredients
Active Ingredient:
Calcium Hypochlorite: 56.44%
Other Ingredients: 43.56%
Total: 100.00%
Ingredients
Active Ingredient:
Calcium Hypochlorite: 56.44%
Other Ingredients: 43.56%
Total: 100.00%
Ingredients
Active Ingredient:
Calcium Hypochlorite: 56.44%
Other Ingredients: 43.56%
Total: 100.00%
Ingredients
Active Ingredient:
Calcium Hypochlorite: 56.44%
Other Ingredients: 43.56%
Total: 100.00%
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.
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
-
What is HTH Shock Advanced and how is it different from regular shock?
-
What is HTH Shock Advanced and when should I use it?
-
How is HTH Shock Advanced different from HTH Shock Ultra?
-
Does HTH Shock Advanced contain stabilizer (CYA)?
-
How much HTH Shock Advanced do I use and how do I apply it?
-
Can I use HTH Shock Advanced instead of liquid chlorine for weekly treatment?
-
How long after adding HTH Shock Advanced can I swim?
Reviews
Related Products
Discover products our customers trust and recommend
Block Chlorine Lock with Cal Hypo
Discover how Cal Hypo pool chlorine works without CYA to prevent chlorine lock and keep pool water clear, balanced, and safe for swimmers.
Simplified Pool and Spa Care with HTH™ Test to Swim
Simplify pool and spa water testing with the HTH™ Test to Swim™ App. Scan your test strip, get instant results, and receive personalized pool care recommendations.
Transform Your Pool with Brilliance™
Looking for clearer pool water? Discover how HTH™ Brilliance Cal Hypo Chlorine Tablets improve water clarity and prevent chlorine lock.
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
