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Rating: 4.2 of 5 stars 12 Reviews 12 Reviews 4.2 out of 5 Stars

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83% Recommend

83% of reviewersrecommend this product

Rating: 4.2 of 5 stars 4.2 / 5

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API Pond-Zyme Sludge Destroyer Pond Sludge Remover

API Pond-Zyme Sludge Destroyer Pond Sludge Remover

  • Most Helpful Positive Review

    Read All 10 Positive Reviews

    Dirty Water

    By Koiqueen on Jul 19, 2020

    I have a very large pond w/two waterfalls and an over population of over sized fish. I use this every time I clean the filter and it really breaks down the waste and helps keep the water clean. I have to use more than the directions suggest to get the necessary results. And I don't have to travel I have a very large pond w/two waterfalls and an over population of over sized fish. I use this every time I clean the filter and it really breaks down the waste and helps keep the water clean. I have to use more than the directions suggest to get the necessary results. And I don't have to travel across town to a pet shop to get it. … more

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  • Most Helpful Critical Review

    Read All 2 Critical Reviews

    Unhappy with product

    By Gracie on Jun 22, 2020

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

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9 Reviews

Showing 9 Reviews

  • 5 out of 5 stars

    Dirty Water

    By on

    I have a very large pond w/two waterfalls and an over population of over sized fish. I use this every time I clean the filter and it really breaks down the waste and helps keep the water clean. I have to use more than the directions suggest to get the necessary results. And I don't have to travel across town to a pet shop to get it.

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  • 5 out of 5 stars

    Be patient

    By on

    At first I wasn't sure if it would work, but near the end of the first two weeks, the water was almost crystal clear!

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  • 5 out of 5 stars

    Works well

    By on

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

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  • 5 out of 5 stars

    Great product

    By on Top 1000 Contributor

    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

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  • 5 out of 5 stars

    pond zyme destroyer

    By on

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

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  • 5 out of 5 stars

    My go to product.

    By on

    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.

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  • 5 out of 5 stars

    Sludge B Gone

    By on Top 500 Contributor

    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.

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  • 5 out of 5 stars

    No more sludge

    By on

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

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  • 5 out of 5 stars

    Great for ponds, equally great for large goldfish tanks

    By on Top 100 Contributor

    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

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