In The Swim Cal-Chlor Pool Chlorine Granules - 25 lbs.

Ordered a pail of shock as it was on sale. Delivered on time and in good condition. This was a great buy. No photo as it is just a pail of shock. I do like using this brand of shock.

Excellent product and customer service.

Helped to get rid of black algae after brushing.

My pool was green as grass.. With all this rainy weather I was having a hard time working on it. When the acid came I added 2 cups to the deep end and 4 cups chlorine. It started changing colors the next day. I have continued to use the chlorine wit a little less acid and now I can see the bottom in the deep end. I will continue to use this method until I get the pool clean.

Can't live without it for the pool, but just wish it were more reasonably priced and lasted longer.