HTH 52037 Swimming Pool Care Shock Advanced, Swimming Pool Chemical, Cal Hypo Formula, 12 Count(Pack of 1)

If you are looking for a straightforward way to keep your pool or hot tub inviting, the HTH Shock Ultra is a highly effective choice. This fast-dissolving, 4-in-1 formula is designed to solve 90% of common water problems within 24 hours, making it a staple for regular maintenance. I buy these every couple of months because they work wonders for both in-ground pools and hot tubs. The Cal Hypo-based formula is a standout because it sanitizes without adding cyanuric acid (CYA), which helps you avoid "chlorine lock" and keeps your water chemistry balanced longer. Why this shock treatment is a great choice for your maintenance routine: Restores Clarity Quickly: It effectively kills bacteria and algae while reducing the strong chlorine odor and eye irritation often found in busy pools. Multi-Functional Performance: This treatment not only sanitizes but also provides a visibly brilliant sparkle to the water by removing organic contaminants. Universal Compatibility: It is safe for use in all swimming pool types, including vinyl-lined pools and saltwater systems, providing peace of mind regardless of your setup. Convenient Weekly Use: Designed for easy application, this shock treatment helps you maintain a healthy environment for your family with minimal effort. I haven't had any issues with packages arriving broken or anything leaking out in the box. This 6-pack lasts me about 2 months as I use it for an in-between.

It works perfectly to keep my pool clean

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!

I had this stubborn black mold looking stuff in the rubber seal around my washing machine from previous owners. I had tried everything!! Bleach, vinegar/baking soda, intense scrubbing, endless cleaning cycles, the tablets made for cleaning washing machines, etc. Nothing worked. This stuff did. Obviously be careful though, it's very potent.

This is a pure unscented product that can be used for purifying water in your pool or, at the proper dose, water in any container. It is a safe product for the removal of algae or any bacteria or viruses in your water when used at the proper dose. It dissolves quickly and completely and can be used in small amounts according to your needs. This package will treat thousands of gallons of water making it a great value.