This is chlorine and not SHOCK.. I searched Shock and ordered it a but it's unusable chlorine. It's granulated so it does not work in a normal pool. Above ground should be fine.

Really keeps my pool crystal clear like no other I've tried.

Not as good as the liquid.

My chlorine is are good and No cloudiness after uses

We've used this product for years now.

We have used this for years and are very happy with it

It does not equal the product I generally buy from the pool store

Works well for our in-ground pool

always purchase this, best one.

This is our second year using. Works so much better than a lot of other products we have used.