Pondworx Pond Bacteria - Formulated for Large Ponds, Water Features and Safe for Koi - 1 Gallon

This is the only brand I now use for my pond and it does the job. Have tried others but none have worked as well as this one. Pond stays clearer longer between cleanings.

Seems to help and costs less than other similar products.

this clears up our Koi pond perfectly I love it!!

Was a little skeptical at first, figured a I had enough natural bacteria in my 1.5 acre pond, but this product was excellent. One application added at least a foot of clarity in about two weeks and has maintained for the past month. Will certainly buy again when it's time

For a water fall with small pond water feature I have tried 2 other products, this one made the water much clearer , much faster and is a much better value. I will continue to use it. Highly satisfied

Very easy to use. Put one full bottle of the liquid organic bacteria in a week for three weeks and then monthly. It will clear up some muck in the water. A good price as well. Highly recommend.

It has been only days since our pond was treated so it's hard to know how effective it will be as time goes on but the water does seem clearer, especially along the banks. The product was easy to use. Will try to update later. Quick delivery.

Worked great. In 1 week it made such a difference. Love that is safe to use around animals and fish.

hard to tell exactly how effective it is but it does seem to work.

Waste of money. It absolutely did nothing to remove the green algae. Will not purchase it again, if it wasn't for the trouble i would seek a money return.