Jack’s Magic Blue Stuff

Product worked 100% couldn’t believe it has to be first product that was true to its word took 24 hours and vinyl liner looked as good as new I thought I was going to have to replace my pool liner and after all the products that are used, this was the best thing ever saved me $2500

Works like it should. Gets rid of metal spots on my fiberglass pool. Been using the blue suff by Jack's Magic for many years and Amazon has the best price around for us Florridians.

This was recommended by our pool installation company to resolve our brown color issue with our well water. This worked perfectly and quickly.

We had a pool issue caused by our pool builder, but in a nutshell, it left us with deeply entrenched algae stains in our gunnite finish on the bottom and sides of our pools. Tried this as a recommendation from our pool service man, in combination with weekly pool shocks, and it does seem to have made and additional cleaning contribution, but we're not 100% clean yet, more like 88% percent improved. I may try more, see if we can get it all out. I think if this stuff will work well, it may be a bit more time required. I've used 4 bottles in a 34' X 20' X 4.5' pool this far.

Our pool guy recommended we use this. It was delivered timely and is easy to use.

This is crap I can’t return it and still in the box unopened. Never again.

Great product.

Excellent