CrystalClear OneFix - Natural Water Clarifier - 16 Ounces Treats up to 6,000 Gallons

It didn't for my koi pond. The water never changed or cleared up. The weather being so hot in Florida May have had something to do with it. Maybe the package got too hot during delivery? I used the whole bottle over a week. Still have green water algae. I hesitate to give it another try.

You may want to consider different packaging--my bottle arrived in tact but it had leaked a bit. You had thoughtfully wrapped the bottle in a "baggie" so the spilled liquid didn't get on anything, and not very much had leaked out, but I thought you may wish to know that the present method of shipping isn't working perfectly. Of course, it may have been run over by a UPS truck or something, who knows! The product itself is great.

Clears up the water overnight. Awesome stuff

This is the second product I’ve used for cleaning up the algae in my fountain and it seems to be working well. I just put it in the fountain yesterday and the water looks clearer already.

Great price

This stuff did absolutely nothing for my pond. Perhaps it’s better suited for an aquarium. I added three home made biological filters to my pond and I haven’t had to add anything other than API waterfall cleaner to my rocks to prevent sludge.

Didn't seem to work that well

I used it in my birdbath that has a pump that keeps the water moving. This product doesn't control the algae. Once it's in the water, on the rocks or the lining, it's the beginning of the endless cycle of trying to fight it. Now I just change the water every few days and scrub off the never-ending algae each time. Bummer.