HTH 52037R Pool Care Shock Advanced, Swimming Pool Chemical - Cal Hypo Formula, Prevents Bacteria & Algae, Restores Crystal C

4.7 4.7 out of 5 stars | 13,347 ratings

Price: 57.78

Last update: 01-11-2025


About this item

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

Product information


Top reviews from the United States

SJ Benn
5.0 out of 5 stars Effective results quickly
Reviewed in the United States on August 6, 2024
The HTH 52036 Swimming Pool Care Shock Advanced is outstanding for pool maintenance. This 6-pack delivers effective results quickly, clearing cloudy water and combating algae. The shock dissolves easily and doesn’t leave residue, making it user-friendly. After one treatment, my pool stayed crystal clear even with rainwater, which is impressive. The 6-pack offers great value, as it lasts longer than many other products. It’s suitable for all pool types, whether above-ground or in-ground. Overall, this pool shock is reliable and efficient, providing excellent results with minimal effort. Highly recommended for anyone seeking a high-quality solution for maintaining pristine pool water.
Trey
5.0 out of 5 stars Affordable and Effective Pool Shock - A Great Value!
Reviewed in the United States on July 17, 2023
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!
Suzanne E. Short
5.0 out of 5 stars This pool shock seems to work a lot better than others
Reviewed in the United States on October 20, 2024
I’ve tried cheaper brands and some more expensive brands but this stuff seems to work very well. Ordering from Amazon is a little cheaper and more convenient than going to the pool supply store to purchase. Not sure what else I can say I mean it’s Poole shock! But it is easy to use. Just cut the bag open and sprinkle it in your pool. Just don’t do it on a windy day or it will blow all over the place.
Linda J
4.0 out of 5 stars It worked for my stock tank pool!
Reviewed in the United States on September 3, 2024
The product worked, however there were no instructions on the package on how much to use for smaller pools... The package indicated it would treat a 13,500 pool, which was WAY larger than my 700-gallon stock tank pool, thus the four-star rating. I had to do some calculations and started out with a tablespoon, which after 24 hours was not enough. I added more which was still not enough after 24 hours. I finally, ended up using 1/3 of the bag which did the trick. My stock tank pool's interior has pond shield on it and there doesn't appear to be any damage to it. I did have to run my Intex pump with filter for over 20 hours (changing the filter three times during this period) as even though the green was gone, the water was still very cloudy. The box contains six bags which should be enough to last me many years as we rarely get a lot of rain during the summer (like we just did which caused the pool to go green!)
Diana
5.0 out of 5 stars Works great!
Reviewed in the United States on September 27, 2024
Easy to use. Our pool was starting to show signs of algae growth along the pool walls so my husband needed to shock it. We’ve purchased shock through our local Lowe’s but this time decided to go with Amazon as we felt like it was at a lower rate which is a win for us. We shock our 10,000 gallon pool weekly running the pump for 12 hours as we add other chemicals too. It leaves the water sparkling clean and always makes me want to jump in the following day because the water looks so nice. I say that it last about a week before having to re-shock or depending on how often pool is used.
Customer image
Diana
5.0 out of 5 stars Works great!
Reviewed in the United States on September 27, 2024
Easy to use. Our pool was starting to show signs of algae growth along the pool walls so my husband needed to shock it. We’ve purchased shock through our local Lowe’s but this time decided to go with Amazon as we felt like it was at a lower rate which is a win for us. We shock our 10,000 gallon pool weekly running the pump for 12 hours as we add other chemicals too. It leaves the water sparkling clean and always makes me want to jump in the following day because the water looks so nice. I say that it last about a week before having to re-shock or depending on how often pool is used.
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Customer image
Heather P
5.0 out of 5 stars Regular purchase
Reviewed in the United States on November 18, 2024
This is a regular purchase for us and works well in our pool. Plus so much cheaper than in stores!
Christie HOPKINS
5.0 out of 5 stars Excellent product
Reviewed in the United States on October 6, 2024
I like that the smell was strong that's when you know it's working at its best , water clarity was on point after using, quality good,size was great I can get 3 uses out of it for my Jacuzzi,worth it, it's cleans fast within minutes, also helps take slim away. Thanks ????
pete Brannam
5.0 out of 5 stars It works great!
Reviewed in the United States on November 24, 2024
It cleared our pool quickly, along with a few other
Solutions.
Great stuff!

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