This product works great around edges of pond where algae seems to appear most frequently. The consistency is like table salt. It is easy to distribute and sinks nicely where you throw it, unlike some products I've used that float away and sink where ever. The water temp and sun are important. I didn't give it 5 stars because I'm not sure if it works that well on deep pond floor algae. Could be I'm not using enough. Also wish it worked in cooler temperatures when algae first appears.
This product works well in small ponds, but is too expensive for a large pond. I have a 24,000 gallon pond. 50 lbs will not keep it clear for a year. People with acre size ponds will go broke trying to get rid of algae with this product. Copper kills algae in large ponds, but kills fish. Likewise chorine can make a small pond sparkle, but kills fish. I have used this product for 3 years and it seems to not have harmed my fish. Other reviewers seem to either love or hate this product. The ones with small ponds like it, the ones with large ponds hate it.
We received in a very timely fashion and when we applied it to the algae in our pond, it started working immediately. Since the algae was so bad, we applied a second time in a week and that is starting to work.
I'm in the process of battling mucilage algae. The Green Clean Pro is the first thing that I Have used that looks promising. The battle is not over but I feel like I have a 50 pound bag of hope. I like the fact that you see immediate results. On smaller ponds you do need to keep an eye on the pH level.
GreenClean Pro works well, but not a silver bullet
By Greg on 10/25/2011
GreenClean quickly killed algae in my fish pond. It works instantly with floating planktonic algae. String algae takes a little longer and higher concentrations. I am concerned that that this product will burn the gills of my fish, but so far they are not showing any negative effects. Much of the dead algae floated in the water, so I used alum to bind it and made it sink to the bottom, so I could vacuum it up. It seems necessary to get the dead algae out of the pond, otherwise, it will breakdown and be fertilizer to grow more algae. Even though I cleaned my pond to look like a clean swimming pool, algae has grown back, so I will need to keep using GreenClean.