Clorox® Pool&Spa™ Shock Plus, for Crystal Clear Swimming Pool Water, Swim-ready in 15 minutes, Suitable for vinyl pools 12 Count (Pack of 1)

This stuff is great. I use 1 package a week and run my filter for 4 hours a day, once i started back flushing my pump for 20 seconds every week I have beautifully clear water all summer. No need for anything else. And I've swam right after using this with no issues. For reference my pool is small only 18ft

This is easy to use and is effective. We throw in a couple bags if we have consistently high temps for several days or have a get together where there are lots of people in the pool. It dissolves quickly (so I'm confident it isn't just getting sucked into the filter before it can work). Keeps our pool looking great.

Best shock on the market. Dissolves quickly inside of the pool, no premixing needed. One pound is good for 12,000 gallons where most shock is only good for 10,000 gallons. This saves me from having to use one extra pound, very economical. It goes out of stock often. It kills all types of algae.

Works well I like you can use pool sooner than others I never go in 15 minutes usually 2 hrs which is faster than others. Be sure to test water

this shock/clorinator works great, good value- i just went to re-order, the price has gone up $10 in 10 months [20%] wtf?

Works great

Worked well

There is not a better pool shock on the Market! I'm not a chemist, so I can't go into detail on why this shock works so well. But I can tell you from my experience with 33 years of owning a pool. I have not found anything that works as good as this Clorox extra blue pool shock does. 1 packet a week in my 16000 gallon pool and my water is crystal clear! No algae problems at all! Doesn't sting your eyes and you can be swimming again in less then 20 minutes. You can't go wrong with any of Clorox extra blue products!