how many gallons does this treat

The container comes with a soup about tablespoon sized and there is messing table on the container of how many scoops per 100 gallons. I have been using it once a week with 2 scoops and there's about 6 months worth in the container, by my guess. I hope this helps!

Hi my water is clear. But will this work for cleaning up a sludge spot in my pond that is about 4X4? Or should I go with a pellet sludge remover?

This product is excellent I use it with either API pond flush or Microbelift PL. A super self discovered secret is mix 2 parts liquid bacteria above with one part pond zyme to make a cookie dough consistency. Roll it into a ball and drop or toss into pond directly into dirtiest sludge spots in the bottom of your pond. We use this technique in show ponds at a pond outfitter. Tried and true for over the last year. Unplug this UV’s for at least a day. You can substitute half barley extract if you’re having an issue with string algae. I then supplement with whatever remaining liquid you need to add for the size of your pond.

I have a 600g pond. I dosed it last night. Water is still black. How long does this take to clear water?

I was not a fan of this products performance. I've not had Black problems before, but lots of Green especially in Spring. I think water changes and UV Sterilization unit was my clear water help!

Api Pond Zyme Sludge Destroyer Pond Cleaner With Natural Pond

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Description

🌿 Transform your pond into a crystal-clear oasis with nature’s own sludge destroyer!

TRUSTED LEGACY BRAND - Backed by nearly 60 years of API’s proven aquatic care expertise for a safe, vibrant underwater ecosystem.
PUMP FILTER FRIENDLY - Prevents clogging by breaking down solids, extending the life of your pond’s mechanical systems.
EFFORTLESS POND CLARITY - Clears murky water and reduces sludge buildup, keeping your ornamental pond pristine with minimal effort.
ECO ACTIVE SLUDGE BREAKDOWN - Harnesses natural bacteria and barley to rapidly digest fish waste, algae, and organic debris.
SEASONAL REGULAR USE FORMULA - Optimized dosing schedule for start-up, end-of-season, and ongoing maintenance ensures lasting pond health.

API POND-ZYME SLUDGE DESTROYER is a 1-pound pond cleaner that uses natural bacteria and barley to break down fish waste, algae, leaves, and grass clippings. Designed for ornamental ponds, it reduces sludge buildup and maintenance by digesting organic matter, preventing pump and filter clogging. Recommended for bi-weekly dosing during pond start-up, end-of-season, and regular upkeep, this product ensures a healthier, clearer pond environment trusted by fishkeepers for nearly six decades.

Specifications

ASIN	B000OVCI2S
Allergen Information	Apple Free
Best Sellers Rank	#2,063 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #9 in Water Garden & Pond Treatment
Brand	API
Brand Name	API
Customer Reviews	4.3 out of 5 stars 4,897 Reviews
Global Trade Identification Number	00317163021460
Item Form	Stick
Item Type Name	Pond Sludge Remover
Item Weight	16 ounces
Manufacturer	Mars Fishcare
Manufacturer Part Number	146B
Model Number	146B
Number of Packs	1
Pet Type	Fish
Target Species	Fish
UPC	885730609644 885479943481 317163421468 885509235029 317163021460 885232340557 885390880940
Unit Count	1 Count

Reviews

R**E

28.06.2024

K**E

8.04.2026

C**R

6.11.2025

M**H

1.05.2017

C**E

14.11.2025

J**N

13.08.2025

K**D

12.04.2025

S**.

21.02.2026

D**E

13.12.2023

C**N

15.07.2025

G**.

17.03.2026

L**S

9.05.2017

S**N

5.04.2016

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Esc 11283

Duties & taxes included

In stock

Sold byAmazon Cape VerdeDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Cape Verde.

Secure transaction

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API POND-ZYME SLUDGE DESTROYER Pond Cleaner With Natural Pond Bacteria And Barley, 1-Pound Container

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Common Questions