HTH52040B Swimming Pool Care Shock Ultra, Swimming Pool Chemical, Cal Hypo Formula, 1lb (6 Pack)

This stuff is amazing took my pool from a green/brown color to blue in less then 24hrs. My pool is around 16000 gallons and I used two bags

Keeps my pool clear all summer!

This was after running the pump for about 4 hours. Super happy with the progress so far.I used one pouch for our swim spa (about 8000 gallons).

Having not ran the filter or done any kind of maintenance on the pool for over four months I knew it would take some work to get the pool back swim ready, so I decided to start with this and I am happy to report that it Works very well beyond my expectations! Using all 6 packs, My pool went from a dark green swamp to a clear swimmable oasis in just 2 days! I couldn’t be more pleased with the product

Love this shock. Pool chemicals are so expensive now and that's why I ordered on Amazon. Cheaper prices.

Love this kit it’s the best to clean our pool

Although it is not recommended we use this in our hot tub spa.Just adjust the amount to allow for the smaller pool.Like the product keeps the water clear.Once the pH was balanced this product seems to maintain everything well.

Appears to be the as the pool store, but a lot less expensive..this is my go to shock. Great brand of products!