The Block™ Bio-Maintenance

The Block™ Bio-Maintenance

  • 1 lb $29.95 PDBLOCK1
  • 5 lb $94.95 PDBLOCK5

The Block™ by pond boss® PRO is a blend of live bacteria and enzymes specifically designed to improve water quality by reducing unwanted nutrients. Decaying nutrients such as leaves, grass clipping, dead plants, excess food and other organic material build at the bottom of the pond in what is commonly called the “sludge” layer of the pond. The sludge layer is most often responsible for undesirable odors and low oxygen levels. Regular use of pond boss® PRO The Block™ will degrade unwanted organic debris accumulation and improve the overall health of the pond while clearing the water column of unwanted organic material.


  • Increases water clarity
  • Significantly reduces noxious odors caused by hydrogen sulfide, dead plants, and fish waste
  • Reduces ammonia and nitrogen levels
  • Dissolves away organic sludge
  • Improves dissolved oxygen levels
  • Effective over a wide range of pH conditions and water temperatures
  • Releases bacteria throughout use
  • 1 lb block treats up to 1 acre-foot of water (325,000 gallons)
  • 5 lb block treats 5 acre-feet of water (1.6 million gallons)

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