Search  for anything...
HTH

HTH 52035R, Swimming Pool Care Shock Advanced, 1 lb

  • Based on 1,951 reviews
Condition: New
Checking for the best price...
$6.16 Why this price?
Save $178.83 was $184.99

Buy Now, Pay Later

As low as $1 / mo
  • – 4-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.

Availability: Only 4 left in stock, order soon!
Fulfilled by Amazon
Arrives Tuesday, Oct 20
Order within 29 minutes
Available payment plans shown during checkout
Protection Plan Protect Your Purchase
Checking for protection plans...

Recently Viewed

Size: 1 Pack


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

Description

The HTH 4-in-1 Shock Treatment is the ultimate solution for crystal clear pool water. This fast-dissolving formula kills bacteria and algae, reduces chlorine odor and irritation, and quickly restores crystal clarity. With its multi- functional shock treatment for weekly use, you can easily solve 90% of pool water problems within 24 hours. The Cal Hypo based formula sanitizes without adding cyanuric acid (CYA), which prevents overstabilization or chlorine lock. This product is suitable for all including-lined saltwater systems. For the best results, use the HTH 6-Way Test Strips to test and balance your swimming pool water twice weekly. Stay all clear for cannonballs with HTH 4-in-1 Shock Treatment!

Brand: HTH


Item Weight: 16 ounces


Item Form: Powder


Product Benefits: Sanitizes,Prevents Bacteria,Kills Bacteria


UPC:


Brand Name: HTH


UPC: 073187520357


Package Size Name: 1 lb.


Number of Items: 1


Unit Count: 16 Ounce


Item Highlight: Cal Hypo Formula; Multi-functional shock treatment; Visibly Brilliant Sparkle


Included Components: HTH 52035 Swimming Pool Care Shock Advanced, Swimming Pool Chemical, Cal Hypo Formula, 1lb


Item Type Name: Swimming Pool Chemical Prevents Bacteria & Algae, Cal Hypo Formula


Manufacturer: Innovative Water Care


Model Number: 52035


Manufacturer Part Number: 52035


Manufacturer Warranty Description: Warranty


Item Form: Powder


Product Benefits: Sanitizes,Prevents Bacteria,Kills Bacteria


Item Weight: 16 ounces


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Oct 20

This item is non-returnable:

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Works great and keeps pool crystal clear!
Size: 1 Pack
This pool shock works really well! It cleared up the water quickly and helped keep everything clean and balanced. Easy to use and does exactly what it’s supposed to. I’ve noticed a big improvement in water clarity after using it, and it’s been reliable every time. Great value for the price and a must-have for pool maintenance. Highly recommend for anyone looking to keep their pool in great condition! ... show more
Reviewed in the United States on April 9, 2026 by Shelby
    • Clear water and instructions
Size: 1 Pack
Keeps my above ground pool clean within a matter of hours with no harsh oders!! Has been super effective for me. Water is crystal clear after some hours with the filter running. A little goes a long a way for me but of course do your research and know how much to add. I shock my pool weekly and the water does not feel harsh at all. ... show more
Reviewed in the United States on August 4, 2026 by Jason Acosta
    • Good stuff that works great
Size: 1 Pack
Great price for a needed product
Reviewed in the United States on June 11, 2026 by JAMES PARKER
    • Pool time !!!
Size: 1 Pack
Review Image by Dee D.
Review Image by Dee D.
I have 3’ x 8’ pool. This shock works magic. If the pool starts getting a little algae and greenish tint…. I put some of this stuff in and run the filter overnight. In the morning the water is crystal clear
Reviewed in the United States on July 29, 2026 by Dee D.
    • Works
Size: 1 Pack
Great product
Reviewed in the United States on July 20, 2026 by LuAnn Chance
    • Works Fast and Keeps Pool Water Clear
Size: 1 Count (Pack of 2)
I’ve been using HTH Pool Shock for regular pool maintenance, and it has worked really well. It dissolves quickly and helps clear up cloudy water fast, which makes a noticeable difference within a short time after treatment. My pool water has stayed much cleaner and more balanced since I started using it consistently. It’s easy to apply and fits right into my normal cleaning routine without any hassle. Overall, this is a reliable and effective pool shock treatment. Great for keeping water clear, clean, and ready for swimming with minimal effort. ... show more
Reviewed in the United States on April 30, 2026 by Texas Legend
    • Would buy again
Size: 1 Pack
Convenient
Reviewed in the United States on September 25, 2026 by Marie
    • Pool clean
Size: 1 Pack
Excellent for my pool, use it once’s a week and 3 bags to open and close pool
Reviewed in the United States on August 20, 2026 by Ron

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...