Clorox Pool&Spa 33512CLX Pool Shock XtraBlue (12 1-lb Bags), 12 Pack, White

I used this brand for years . Does the job. I was buying Pool Shock. Yes, it's just chemicals. The one Star haters even have a problem with it.I try all types of brand of shock and never had a problem with any of them... One of the brands I have used a lot without a problem. In my opinion if it is not working for you. YOU are doing it wrong. So many factors are involved to have the shock work. Water hardness , PH , how bad the water is in the first place .... I test the water myself but most pool stores will test it for you for FREE. This is just one example of many. Every Amazon has at least one bad review. I now do a review search online as well as Amazon reviews. I take them with a grain of salt. Then make my decision.Also I now If I like an item I got on Amazon I go out of my way to write a review and give my opinion on the 1 star rating...

Been using this product for years in my salt pool.. Works great.

Excellent

Did exactly as advertised, got rid of the algae.

Clorox ExtraBlue 6-1 is good and is more granular.Clorox 4-1 is like powder and blows when disbursing. It will get in your eyes, nose, and mouth unless you have a respirator and airtight goggles.

Great price and super fast shipping

I use this right after I have a big crowd over. The “blue” in this also has an algaecide which I love. My above ground pool is prone to yellow algae. Since I’ve been using this religiously, I have greatly reduced the separate algaecide cleaner I use. I’ve finally figured out how to keep my pool clear. I totally recommend this product.

Excellent pool shock, works well.