This is a terrible. Using this product raised the CYA. We had to empty 1/2 of the pool. they should have to reimburse us for the chemicals and water. Do not buy this product.

If you want to drain your pool later due to high CYA levels caused by using cheap stabilized shock then this is for you. I made the mistake of using this and now I’m paying the price. Do yourself a favor and use Cal-Hypo shock. I’ve bought this shock twice now and my CYA is 148. Gotta drain and start over.

DOES NOT WORK LIKE NAME BRANDS. DONT WASTE YOUR MONEY

my pool is still green after shocking. chlorine is high but doesn't clear. i had already cleaned the pool and it turned green again idk. hadn't had this problem in the past. haven't had good experience with this product.

Great when not getting ripped off. Should be 65 green backs all the time. Not sure if this is MPS and the undisclosed adverse health effects but I'll take it

This is NOT CYA free. I used and it made my cyanuric acid levels skyrocket. I had to drain my pool to get rid of this product. Too much CYA causes chlorine lock which means you keep dumping it in your pool and it does nothing. You’ll have green water and high phosphates in no time. I highly suggest avoiding this product and buying CYA free product.

After 6 bags the pool is getting greener. 1700 gallon, in ground pool. it may be better for an above ground

I have used 4 cases of this in the past month and it seems like it’s not effective as cal hypo.

Terrible! When put into the pool it sinks to the bottom and does not dissolve. Did not even clean the pool.

This stuff is about half the strength of what you get at the pool places so you’re wasting your money buying it because you have to put double the amount of what you would put from the pool place.