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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$136.49

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Sold byAmazon British Virgin IslandsDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌿 Clear water, happy fish — pond perfection made effortless!

LOW MAINTENANCE POND CARE - Reduces cleaning time by minimizing organic buildup and pump clogging.
ECO ACTIVE SLUDGE BREAKDOWN - Harnesses natural bacteria and barley to rapidly dissolve fish waste and pond sludge.
TRUSTED BY 4 000 ENTHUSIASTS - Highly rated with 4.3 stars for crystal-clear water and thriving aquatic life.
ALGAE DEBRIS DIGESTIVE FORMULA - Effectively breaks down dead algae, leaves, and grass clippings to keep water pristine.
PROVEN TWICE WEEKLY START UP BOOST - Kickstart your pond’s health with targeted dosing twice a week for two weeks each season.

API POND-ZYME SLUDGE DESTROYER is a 1-pound pond cleaner that uses natural bacteria and barley to break down fish waste, algae, and organic debris. Designed for ornamental ponds, it reduces sludge buildup, improves water clarity, and lowers maintenance frequency with a simple bi-weekly dosing schedule. Trusted by thousands, it ensures a healthy, vibrant aquatic environment for koi, goldfish, and more.

Specifications

ASIN	B000OVCI2S
Allergen Information	Apple Free
Brand	API
Brand Name	API
Customer Reviews	4.3 out of 5 stars 4,151 Reviews
Global Trade Identification Number	00317163021460
Item Form	Stick
Item Type Name	Pond Sludge Remover
Item Weight	454 g
Item form	Stick
Item weight	454 g
Manufacturer	Mars Fishcare
Manufacturer Part Number	146B
Model Number	146B
Number of Items	1
Pet Type	Fish
Target Species	Fish
UPC	885730609644 885479943481 317163421468 885509235029 317163021460 885232340557 885390880940
Unit Count	1 Count
Unit count	1 Count

Reviews

E**H

Great for my pond

Best I’ve found to kill string algae and control my pond. Water stays clear. Red eared slider is happy. Fish are thriving. Totally worth it and I’ll be using this forever.

14.07.2026

C**N

Great stuff. Works amazing

A little goes a long way. We add it and by the third say the water is crystal clear. We've used it a few time overthe year and it's amazing

15.07.2025

G**.

Healthier water product

Have used this product all the time does seem to help in the Warmer months, to keep the pond water healthy

17.03.2026

L**S

Excellent product!

Very good, did on excellent job on my swimming pool converted to koi pond ( still 5' deep) very happy with this product

9.05.2017

S**N

One Star

Doesn't work. Koi eating it all up, my clear pond water suddenly all murky and covered with brown scum.

5.04.2016

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$136.49

Duties & taxes included

In stock

Sold byAmazon British Virgin IslandsDelivered 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 British Virgin Islands.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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Great price for an authentic product. Fast international shipping too!

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