Macro-Zyme™ Time Release Muck Block

Macro-Zyme™ Time Release Muck Block is perfect for applications and locations that you just can’t get to every 2 weeks for reapplication.


Each Muck Block is packed with high counts of bacteria CFU’s, which will gradually release into the water system to aggressively attack and decompose muck and organic matter.  When placed in areas of water current or in feeder streams, the water movement will carry the muck-busting bacteria throughout the pond, making applications and treatments a breeze.


Each 5 lbs. block is formulated to slowly release bacteria dosages that will treat up to 2 acre feet of water.  It is much more effective when used with water movement, as the current will help dissolve the block and carry the bacteria throughout the pond.  The CFU count is as good or better than other bacteria products, which allows it to pack a strong punch in a small package.


Each Macro-Zyme™ Time Release Muck Block is sold individually in a water tight bag, packaged in a user-friendly box.  Reapplication is only needed every 30 days, when water temps are above 55 F!


What is Macro-Zyme™?

Macro-Zyme™ contains a high concentration of facultative anaerobic bacteria that rapidly reproduce and consume organic muck in your pond.  This high concentration of beneficial bacteria will immediately go to work digesting carbons, fats, starches, proteins, and cellulose materials in your pond, cleaning the pond and improving the smells.


It is the perfect choice for the control and elimination of sludge and foul odor in tanks, ponds, and lakes. Once introduced, Macro-Zyme™ quickly releases billions of friendly and beneficial bacteria and enzymes that work around the clock to clear, neutralize, and purify water.


Used by professionals since 1991, this concentrated professional grade formula was the first on the market to introduce a 1-step maintenance program that utilizes natural bacteria and enzymes to rapidly biodegrade top and bottom sludge while reducing components that contribute to sludge build up in ponds of all sizes. Macro-Zyme™ will also reduce nitrates and phosphates. These bacteria will:

  • Reduce odors in 24 hours or less
  • Rapidly remove dead grass, leaves, paper, fish waste, and organic sludge
  • Clear water and help restore a healthy oxygen level


Macro-Zyme™ Requirements


  • Effective pH range is 5.5 – 8.5 (Optimum is around 7.5)
  • Effective temperature range is 55 – 110 F (12.7 – 43.3 C)
  • Minimum dissolved oxygen level required is 2.0 ppm
  • Copper levels must be below .05 ppm