CrystalClear PondShock For Crystal Clear & Healthy Water

My koi pond had suddenly turned VERY GREEN QUICKLY. Couldn't even see my fish let alone the bottom of the pond. Added one of the pond shock balls and within 2 weeks I can see all of my fish and the bottom of the pond. My fish are happy and I am thrilled! I would highly recommend this product

We had to reduce the rate for a 400 gal. old horse tank where our goldfish live so we will get several uses out of one Pond Shock. It proved to be just what we needed to help clarify the water as draining, scrubbing and refilling is a difficult once a year job. I will be buying more.

Just about to order more for the rest of the summer. My water in my small koi pond is now crystal clear and the fish are more active. It has only been two days since I added the bacteria ball. I first cleaned my waterfall bio filter so was starting fresh. It is working better than I hoped!

I have a 600 gallon water garden with fantail goldfish. I only had 3 fish, so not over crowded. I live on the Gulf Coast of Texas with a subtropical warm climate. When the water in the garden warms up, I constantly battle murky green water. I tried the PondShock ball and the DefensePac from the Pond Guy. It took about a week, but ever since, I've had crystal clear water. I have continued the PondShock monthly to maintain and have had great water quality ever since. Highly recommend products from the Pond Guy!

This is a great product. After fighting algae with numerous solutions and strategies, Pond Shock (after a partial water change) is the clear winner. I have stocked up!

Tried this item twice with no success.

Read all the reviews and some were bad but most were good, well it's been over 2 weeks now and the quality of the pond water is the same I'm very disappointed I'm not sure if I need to give it more time or just give up I'm hoping for the best

Added one to my green water pond. a week later, no improvement. Ordered two more and added them both to my pond, still green water. I am retired, living on a fixed income. Could have used that money on something else.

I bought this due to the great reviews. I used one ball in my 1500 gallon pond. After two weeks there was little change so I put in the second ball. Still very little change. The pond has good circulation as well as aeration. Will try a different product to help solve my green water.

Did not clear water, actually made it turn green.