CrystalClear PondShock Ball, Natural Enzymes & Live Bacteria, Freshwater Clarifier Shock Treatment, Muck & Sludge Remover for Small Pond & Outdoor Water Garden Ponds, Koi Fish & Aquatic Plants Safe

I’ve read all the reviews and a lot of different opinions. I took a chance and purchased this product for my Pond was really and we could not see the fish unless they came to the surface. I placed this in the water as directed and within three days my water was very clear. I could see down to the bottom and it did not stress the fish out at all. I am very pleased with us and will be happy to use it again if needed in the future

I used the product with hope it would do as advertised. My pond was clear prior to using. It just had muck in the bottom that this was supposed to take care of. 10 days later, and my pond is worse and filled with algae. My filters never smell bad when I clean them except for now. They smelled like something died in them, and I clean them weekly. I won't be buying again. I guess they work for some. Gamble with it if you want.

Holy slime ball!! This thing cleared my pond so fast! The water went from green and hazy to crystal clear in about 2-3 days! I set up subscribe and save for a one a month treatment. It is great!!

This ball is amazing. Pond is getting clear in less than a week!! Love this stuff. I was using so much algaecide and it was doing nothing. My pond was so green I couldn't see my fish.

Not strong enough

Did not upset my ponds balanceDid help to clear the water a bit

It works

We’re approaching 10 days in, have yet to see a change in the water quality, 200 gallon, Koi pond. Followed instructions. We were hoping to see results but at this point I don’t believe it will happen. Disappointing.