Kasco’s Macro-Zyme Beneficial Bacteria is the perfect choice to control and eliminate sludge and foul odors in tanks, ponds, and lakes. Macro-Zyme contains a high concentration of facultative anaerobic bacteria that will rapidly reproduce and consume organic material in your pond or lake. When introduced in your water, This easy-to-use product quickly releases billions of beneficial bacteria & enzymes that work around the clock to clean, neutralize, and purify. Application is simple — just apply Macro-Zyme in water 55°(F) or warmer and let it go to work.

This easy to use product is available in several forms: as quick-dissolving powder in bulk or in water-soluble bags, as six-ounce pucks, or in 6 lb. blocks. The powder is perfect for treating an entire body of water, like your pond. 

The pucks are designed for easy spot treatments around docks or swimming areas. Both powder and pucks should be applied every 2-3 weeks when water temps are right. 

Use blocks for on-going time-release treatment lasting up to a month per block.