CPDI Champion 4-Pack Pool Shock, 12.5 Liquid Chlorinator for Swimming Pools, 1 Gallon Each - Fast-Acting Sodium Hypochlorite Sanitizer, Ready to Use, Non-Staining, Non-Scaling, Commercial Grade

Earlier this year I had to drain my pool and 'acid' wash every inch of the walls and floor due to an algae overgrowth. I bought this product to use as the wash and it worked fantasticly well! I used a sprayer to apply it and scrubbed from top to bottom. It killed every bit of algae and left the inside of the pool bright and thoroughly clean. I refilled to pool and we are now enjoying a sparkling clean, healthy pool. Easy to use. Good value, great product. No leaking bottles. Highly recommended for acid washing.

Pool chlorine liquid shock. Quality product didn't see any impurities. Good Color as it should be. Packaged well and poured with no issue. Easy enough to use. Just pour in what you need. Smells like bleach of course. Fairly strong so avoid breathing fumes and spilling on anything you don't want bleached. Handle with care. This is much stronger than the laundry bleach. Great to clear out the algae at opening of pool.

Bought this for my pool this summer kept my pool clean and clear. Save me a lot of money on shock. This is the only thing that I will use in my pool because it eliminates algae very satisfied with this product just use as directed easy to use

Good value. Essentially concentrated bleach. I use it for additional chlorine for my pool, and to remove black mold from bricks and concrete

I have tried everything to keep my pond, clean, free of algae and slimy water. In the last month I’ve probably spent close to.$150.00 on different products to try to shock my pond . I finally got desperate and thought about cleaning pools.. I tried this product and it worked fantasticly Instantly my water was clear all the green and white stringy debris was clear from the pond it looks just beautiful.. one note…. it comes in 2 gallon jugs inside one heavy box. The only downfall was, it was too heavy for me to lift had to get help. Good price excellent product I recommend it highly.

Fantastic product. Used it to pressure a house. Worked perfectly. Removed the algae with no problem.

I thought this was a good value and I prefer liquid to granule cool shock. I feel like it is quicker and gets right to work.

Great product!