I use Microbe-Lift Sludge Away in my pondless waterfall feature. The beneficial bacteria formula digests organics that can clog the feature and support algae growth, especially as the water warms. It's safe for fish (although I don't have fish), and it's safe for birds and other animals that might drink the water or use it as a bird bath.

My pond is clear and clean, and it certainly beats having to vacuum out the sludge!

This product did not effectively remove sludge from my pond. At suggested dosing and even higher sludge largely remains.

I have a shallow end of my pond so that the local frogs have a place to get out and the birds can take a quick bath. When I first added rock to this area to keep it protected from the sharp claws of animals, i noticed after a few days that the rocks had turned to almost black. I looked everywhere and tried everything from this cleaner to that cleaner with no prevail. I saw this was made especially for rock bottoms so I got a bottle to try. One bottle would only do my initial dose and my next week, but after doing the first two rounds, I could tell a difference, the rocks were beginning to become clean again. I got a second bottle to continue the steps that they want you to do for four weeks to see how clean they would become. I was looking at my water fall the other day as well and the muck that had accumulated on it over the past few months was also gone showing the beautiful rock faces that I had chosen to build the water fall with. It was just like I had just put it in when actually it was 2 years old. I have tried other cleaners and have scrubbed at those rocks for hours and had never really gotten them this clean before. If you want a easy way to clean your rocks in your pond, this is most definitely the product you want. And just remember, its not going to happen over night, just be patient pond goers!

Love this product. Have use it three times now & my pond is cleaning up nicely - can now see the rocks on the bottom in many places & my water lilies are blooming more than they ever have.

One needs to know what kind of "stuff" is causing the problem. I assumed that the murkiness was due to excessive organic waste matterial. Obviously I was wrong because Microbe Lift did not solve my problem. This is a good product if used for the right purpose.

I put in my initial dosage and 2 weekly follow-up and don't see any effect.

I've used Sludge Away in my fully rocked pond for six years. It is an excellent product for breaking down muck and sludge build up caused by fish waste and leaf debris, when used as directed. I highly recommend it. I buy it by the gallon!