Pond Logic® Muck Defense® Pond Muck Reducer

  • Remove Muck From Liners & Rocks
  • Eliminate Noxious Odors
  • Remove Bottom Sludge

Pond Logic® Muck Defense® tablets digest accumulated organic debris, also known as pond muck, that reside at the bottom of your water garden removing excess nutrients, improving water clarity and eliminating noxious odors. Upon application, the Muck Defense® tablets sink below the surface of the water releasing beneficial bacteria which instantly begin digesting debris. Muck Defense® is great at removing hard to reach muck from the bottom of gravel & rock pond bottoms. All the decaying organic material adds to your nutrient load, which in time can create algae blooms. Muck Defense® reduces the waste and eliminates pond odors to keep your pond clear and balanced.

Tech Specs

Usage Information

Pond Logic Muck Defense
6 Tablets
Pond Logic Muck Defense
12 Tablets
Pond Logic Muck Defense
24 Tablets
Pond Logic Muck Defense
96 Tablets
Application Tablet Tablet Tablet Tablet
Active Temp Above 50°F Above 50°F Above 50°F Above 50°F
Months of Treatment For 2,000 Gallons 3 Months 6 Months 12 Months 48 Months
Shelf Life 5 Years 5 Years 5 Years 5 Years

Dosage Rates

Pond Size
Light Muck (Every 4 Weeks)
Heavy Muck (Every 4 Weeks)
Up To 50 sq ft or 1,000 gal 1 Tablet 2 Tablets
51-100 sq ft or 1,001-2,000 gal 2 Tablets 4 Tablets
101-150 sq ft or 2,001-3,000 gal 3 Tablets 6 Tablets
151-200 sq ft or 3,001-4,000 gal 4 Tablets 8 Tablets
201-250 sq ft or 4,001-5,000 gal 5 Tablets 10 Tablets

For larger ponds, use 1 tablet per additional 1,000 gallons every 4 weeks.

How To Apply

Add the appropriate number of Muck Defense® tablets using the dosage chart above, evenly dispersing them around your pond. They will instantly sink to the bottom of your pond and begin to dissolve.

When To Apply

Apply Muck Defense® once a month when water temperatures are above 50°F. Treatment should continue until desired results are achieved.


When used in accordance with label directions Pond Logic® Muck Defense® is completely safe for fish, plants, pets and pond wildlife.


Replacement Parts

Here are the replacement parts for Pond Logic ® Muck Defense ® Pond Muck Reducer.

Weeds Treated

The first step towards effectively treating any pond weed is proper identification. Pond Logic® Muck Defense® Pond Muck Reducer is recommended for use against each of the weeds listed below. Click on your desired weed for more information and alternate control options.

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