HTH 52037R Pool Care Shock Advanced, Swimming Pool Chemical - Cal Hypo Formula, Prevents Bacteria & Algae, Restores Crystal Clear Water - Shock Treatment, 1lb (12 Pack)

The HTH shock works so much better than others I have used. It dissolves so much faster its amazing. It keeps my pool crystal clear all season long and just 1 bag a week for upkeep. I have tried many others and they either take forever to dissolve or it seems like i need to use more often. I strongly suggest using HTH for your pool needs its so easy to use.

Used this item to keep my pool water clear for about 1.5 weeks until I buy the yearly chemicals to open my pool. Had one left over from last year so I needed one more to limp me along. Works good clears the pool right up and into the second week I dump another one in there because it works.

I was so bummed out—I could not get the water in my pool clear. It was clean—but cloudy. I dosed it with this stuff. The first dose didn’t really help. So 24 hours later, I repeated the treatment. Viola! Crystal clear water. I’m so happy. And it’s going to be 90 today. I know where I’ll be.

Honestly, one of the best shocks for your buck. It is pretty cheap for what it does. It dissolves fairly quickly, easy to open, clears up the pool in an hour or so, and it last for a few weeks.

It's a great product for getting saltwater pools ready for the year.Our cheap OEM cover failed over winter leaving our pool green and nasty looking. 1 bag made noticeable results in 4 hours and had the water clear by the next day.

I have a 15' Intex pool things go green once in a while even though I usually keep 3" diameter chlorine tablets in my skimmer accessory. I throw in about half this package and by the next day, its all great and there really isnt much of a chlorine smell or issue.

I use it the first time in my swimming pool after a rainy day . The best product to shock your swimming pool, keeps the water nice and clear

best shock ever don’t waste your money on others, cleared up algae that inferior shock did nothing for.it is durable and has great chlorine content. we bought clorox shock because it was cheaper and had algae, but once we put this shock i. pooled, cleared it overnight