API Pond-Zyme Sludge Destroyer Pond Sludge Remover

Do not expect this product to clear the pond water by itself. If sprinkled on the water, it ends up in the filter eventually. It seems that sprinkling the powder in the cascade helps mixing with the water. It works better with an algaecide, but in summer, even with the enzymes and beneficial bacteria, UV light and copper ions, the sludge and algae can only be controlled. Still somewhat helpful.

Used it for two weeks and pond water is still dilthy. Will use up product and if no improvement will not use again.

I used this product in my fish pond and 3 of my two year old fish died. I used less than the recommended amount. There were no other chemicals in the pond. This products is not safe for fish or the dead bullfrog that had lived in the pond. I emptied the 200 gallon pond. Hopefully my remaining fish will live. Not happy.

I have a small pond and the sludge from summer has built up. This seems to be breaking it down.

Give this product a chance and it WILL work. I live in Ohio and my pond turned to nothing but sludge and algae toward the end of last summer. Nothing I did removed it. I have 8 goldfish in there and couldnt even see them. I dont like using chemicals so I decided to try this. I also used Tetra Pond Block for algae removal which IS a slight chemical. Together, i am seeing a huge difference in my pond. Its been 2 weeks but be patient. I now see my fish. These products will not work overnight as some claim. I initially started cleaning my filter pads 2x/day and now Im down to every other day. They will not work by themselves. You must devote some time to this no matter what but you are not draining Give this product a chance and it WILL work. I live in Ohio and my pond turned to nothing but sludge and algae toward the end of last summer. Nothing I did removed it. I have 8 goldfish in there and couldnt even see them. I dont like using chemicals so I decided to try this. I also used Tetra Pond Block for algae removal which IS a slight chemical. Together, i am seeing a huge difference in my pond. Its been 2 weeks but be patient. I now see my fish. These products will not work overnight as some claim. I initially started cleaning my filter pads 2x/day and now Im down to every other day. They will not work by themselves. You must devote some time to this no matter what but you are not draining and scrubbing the pond. Simple maintenance plus netting out the dead algae after cleaning the filter pads WORKS. Give it a try but be patient if your pond is really bad. … more

this works good we will keep getting this for our koi pond.

I have been using this product for the last three years in a 8500 gallon two pond system with waterfall connected by a creek. Previously I used multiple liquid, high cost products and still had problems with large mounts of string algae. I added aerators and started using only API Pond-Zyme only and my maintenance has decreased by at least 60%. I highly recommend.

Every Spring at Pond start-up always dreaded the SLUDGE build-up and the constant cleaning of the Pump and Canister Filter Pads almost twice a day. Started using the Pond-Zyme and after the first week, along with the other Bacteria additive, it cut the amount of sludge debris in half! Now the water is cleaner and I'm back to the normal cleaning routine.

Love this stuff. I was having to clean out the pond's filter 2x a day. After one dose, the pond is running beautifully!

Goldfish and their Koi cousins - are just plain dirty! They'd be happy, living their lives in murky, muddy water - but we wouldn't get to see their beauty, and few people would want to keep a mucky mini pond with mostly invisible occupants. This stuff provides both barley and bacterial colonies for breaking down pond sludge, plus clarifying the water so you can actually SEE your beauties! Helpful after pond/tank vacuuming and water changes, this boosts biological activity in your filter system and substrate. This is a dry, powdery or crumbly material; my fish always eat some when added to the tank. I first saw this product being used in large ornamental Koi ponds; my own tank is 75 gallons Goldfish and their Koi cousins - are just plain dirty! They'd be happy, living their lives in murky, muddy water - but we wouldn't get to see their beauty, and few people would want to keep a mucky mini pond with mostly invisible occupants. This stuff provides both barley and bacterial colonies for breaking down pond sludge, plus clarifying the water so you can actually SEE your beauties! Helpful after pond/tank vacuuming and water changes, this boosts biological activity in your filter system and substrate. This is a dry, powdery or crumbly material; my fish always eat some when added to the tank. I first saw this product being used in large ornamental Koi ponds; my own tank is 75 gallons, and is easier to maintain for goldfish if I pretend it's a tiny pond, rather than a large tank. Very effective, and inexpensive for the amazing results it will produce in your pond/tank. … more