Pond Sludge Remover – 5 Pounds Beneficial Pond Bacteria & Enzyme Treatment - 100% Natural Muck Digester – Safe for All Aquatic Life and Recreation - Made in The USA

I have a medium size fountain in my yard that gets a lot of sun.These bacteria & enzyme pellets don't work overnight, but they definitely work!I don't want some super toxic treatment that might work fast, but would poison any birds or wildlife that drink from my fountain.These pellets are made in the USA, and are non-toxic for fish/birds/pets/humans.After I drop some pellets in the base of my fountain, a little clean area develops where the pellet landed. Not only the is the bottom of the fountain getting cleaner, but the water itself is too.Some of the reviews say that the "aggressive treatment" killed their fish, so watch out for that.If you are treating a pond with fish, take it slow.

Good for cleaning pond and removing that bottom sludge over time w continuous use.

Works good. Brings all algae up to surface of pond. However I understood that it dissolves the gunk. It does not. More work to have to skim out what's brought up from the bottom of the pond. Stop using for this reason.

One used this just as instructedI’ve been very patient and waited to see no results from this product. This was a complete waste of money as far as I’m concerned

Our pond is clear and has stayed clear