HTH 52037R Pool Care Shock Advanced, Swimming Pool Chemical - Cal Hypo Formula, Prevents Bacteria & Algae, Restores Crystal Clear Water - Shock Treatment, 1lb (12 Pack)
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Availability:
In Stock.
Arrives
Tuesday, Nov 25
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Size: 12 Pack
Style: Advanced Shock
Features
- BENEFITS: Stay all clear for cannonballs; This fast-dissolving, convenient 4-in-1 formula kills bacteria and algae, reduces chlorine odor and irritation, and quickly restores crystal clarity
- FEATURES: Multi-functional shock treatment for weekly use to solve 90% of pool water problems within 24 hours and restore crystal clarity
- VISIBLY BRILLIANT SPARKLE: This Cal Hypo based formula sanitizes without adding cyanuric acid (CYA) to prevent overstabilization or chlorine lock
- COMPATIBLE WITH ALL SWIMMING POOLS: This product is great for all pool types including vinyl-lined pools and saltwater systems
- YOU'RE ALL CLEAR WITH HTH: For best results, use with HTH 6-Way Test Strips to test and balance your swimming pool water twice weekly
Brand: HTH
Item Weight: 1 Pounds
Item Form: Powder
Product Benefits: Prevents Bacteria,Sanitizes,Kills Bacteria
UPC:
Brand: HTH
Item Weight: 1 Pounds
Item Form: Powder
Product Benefits: Prevents Bacteria,Sanitizes,Kills Bacteria
UPC: 073187520371
Number of Items: 1
Unit Count: 192.0 Ounce
Product Dimensions: 10.6 x 7.5 x 14.1 inches
Item Weight: 1 pounds
Department: Unisex-Adult
Manufacturer: Innovative Water Care
Item model number: 52037R
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, Nov 25
This item is non-returnable:
Non-returnable. Transportation of this item is subject to hazardous materials regulation
View our full returns policy here.
Non-returnable. Transportation of this item is subject to hazardous materials regulation
View our full returns policy here.
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Top Amazon Reviews
I recently purchased the HTH 52037 Swimming Pool Care Shock Advanced and have been thoroughly impressed with its performance. This swimming pool chemical has exceeded my expectations, providing excellent results at a fraction of the cost compared to the local pool store. The HTH 52037 Shock Advanced is a cal hypo formula that effectively restores clarity and cleanliness to my pool water. The 12-count pack offers ample supply for regular maintenance and shocking treatments. Each packet is conveniently pre-measured, making it easy to add the correct dosage without any guesswork. What truly stands out about this pool shock is its affordability. I was pleasantly surprised to find that the HTH 52037 Shock Advanced is significantly cheaper than similar products available at local pool stores. This affordability makes it a fantastic value for pool owners who want to maintain crystal-clear water without breaking the bank. In terms of performance, this pool shock delivers excellent results. It effectively eliminates contaminants, bacteria, and algae, leaving the pool water clean, fresh, and inviting. The cal hypo formula ensures a quick and efficient treatment, helping to maintain proper water balance and prevent any potential issues. The convenience factor of these pre-measured packets cannot be overstated. It saves time and eliminates the need for manual measuring, ensuring accurate dosing for consistent results. I appreciate the simplicity and ease of use that the HTH 52037 Shock Advanced provides. In conclusion, I highly recommend the HTH 52037 Swimming Pool Care Shock Advanced for anyone looking for an affordable and effective pool shock. Its cal hypo formula, combined with the convenience of pre-measured packets, makes it a reliable choice for maintaining a clean and balanced swimming pool. Furthermore, the significant cost savings compared to local pool stores add to its appeal. If you're seeking a high-quality pool shock that offers exceptional value, look no further than the HTH 52037 Shock Advanced. It definitely deserves a well-deserved five-star rating!
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Reviewed in the United States on July 17, 2023 by T
Works well. Bags are for 13,000 gallon pools, so you have to calculate for smaller pools like mine at 8,000 gallon. Will buy again.
Reviewed in the United States on October 31, 2025 by chris williamson
After a weekend full of kids doing cannonballs, friends hanging out, and lots of sunscreen and snacks in the pool, the water was looking a little cloudy and dull. I tossed in one of these HTH Advanced Shock packets in the evening, and by the next afternoon the pool was sparkling clear again — like nothing ever happened. What I love most is how fast it dissolves. No messy clumps at the bottom, and no strong chlorine smell lingering the next day. It also keeps algae from creeping in, which is a huge plus during hot summer weeks. The 12-pack makes it easy to stay stocked for the whole season. This has become my go-to for quick recovery after heavy use, and it never disappoints.
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Reviewed in the United States on September 22, 2025 by Grandpa Obi
This HTH Pool Care Shock is a bit on the pricey side, but it definitely works. It clears up cloudy water quickly and keeps the pool sparkling clean. I also like that it comes in pre-measured “pill” style packets—it makes dosing simple and less messy. I prefer buying these kinds of products in bulk/wholesale since I go through them regularly, but overall this is an effective and reliable pool shock.
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Reviewed in the United States on September 2, 2025 by Picasso
Works great to clear up pool. Keeps water quality and ph in control.
Reviewed in the United States on October 28, 2025 by Kristi
Exactly what my pool needed. Works great
Reviewed in the United States on October 31, 2025 by Amazon Customer
Better than some name brands and cheaper
Reviewed in the United States on October 31, 2025 by Jessica Thalls Rivera
Pool shock. No issues. Granulated not tabs
Reviewed in the United States on October 20, 2025 by Angela Hall