Customer Reviews

Rating: 4.1 of 5 stars 16 Reviews 16 Reviews 4.2 out of 5 Stars

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81% Recommend

81% of reviewersrecommend this product

Rating: 4.1 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 13 Positive Reviews

    Long time user.

    By Cleat on Feb 12, 2022

    I have a medium sized KOI pond with various numbers of fish. I have used POND-ZYME for years and will not use another product. It does the job.

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  • Most Helpful Critical Review

    Read All 3 Critical Reviews

    Not what I purchased

    By Susan on Mar 9, 2022

    Product form states tablet which is what I wanted but this is powder. Decided to try it anyway and so far it is just floating on top of the water 2 days after I put it in.

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16 Reviews

Showing 1-10 of 16 Reviews

  • 2 out of 5 stars

    Not what I purchased

    By on

    Product form states tablet which is what I wanted but this is powder. Decided to try it anyway and so far it is just floating on top of the water 2 days after I put it in.

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  • 5 out of 5 stars

    Long time user.

    By on

    I have a medium sized KOI pond with various numbers of fish. I have used POND-ZYME for years and will not use another product. It does the job.

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  • 5 out of 5 stars

    Pea soup Pond

    By on

    I have had a pond for 12 years very hard to keep clear I figure I try this product one container to see if it works and I found that after two weeks it’s GREAT so order two more for stock

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  • 4 out of 5 stars

    Helps With Spring Start Up

    By on

    I use Pond-Zyme Sludge Destroyer in the Spring when the weather warms up. It helps to rid the pond of the gunk that builds up over the winter. The only drawback is that you will need to use it weekly until you have achieved the desired effect. I suppose some folks continue use. I stop once my pond is clear again.

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  • 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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  • 1 out of 5 stars

    Unhappy with product

    By on

    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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  • 4 out of 5 stars

    Better with other product

    By on

    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.

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  • 1 out of 5 stars

    Do not use

    By on

    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.

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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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