CrystalClear AlgaeOff Pond & Water Garden Scum Cleaner, Waterfall & Rock Slime Remover, String Algae Killer, Green Stain Treatment, EPA Registered Algaecide, Plant, Koi Fish, Bird & Pet Safe, 8 lbs

We have a water fountain. I used two scoops allowing 48 hours to pass. Cleaned up the fountain water and sludge on the sides. Very happy.

worked well for my pond

GREAT product! Does the job!!

This product works good!

I'm not saying it's magic but it is absolutely something! I've used it two times within this week both times after just a few minutes algae starts coming to the top for you to scoop it out. I've kept my pumps running and after I scooped out what I can scoop out it usually settles on top of the lid and I'm able to clean it all out. Water looks disgusting while it's going on but once the pumps run for a while it goes back to Crystal Clear and none of my fish or frogs have died. Definitely recommend if you have algae growth it's obviously doing something to it.

Did not work, even when putting directly on string alage.

It worked well with some scrubbing of the rock in my waterfall. It was described to work without hand scrubbing. Seems expensive for what it does and the extra effort needed.

Seems to work well. No algae in treatment area after only a couple of days