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Zcare Cleaners | We Specialize in Marine and Golf Cleaners

ZCare Holding Tank Treatment

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ZCare Holding Tank Treatment provides a cost effective solution to odor, waste degradation, and corrosion control. It is a highly concentrated bioactive organic formula with complex reactive compounds able to absorb approximately 1000 times their own mass in gasses and pollutants that cause holding tank odor. It is so effective on holding tank odor because these compounds don’t mask the odor, they consume it. This product is formaldehyde free and DOES NOT contain hazardous or toxic ingredients. It contains natural waste digesting bacterial cultures, proprietary organic compounds, environmentally friendly surfactants, and fragrance. This stuff works…GUARANTEED. If you are not completely satisfied, we will refund your money.

Product Features

  • Pour it in and leave it
  • Provides effective odor control
  • Bioremedial Product - Contains natural odor and waste digesting bacteria
  • Formaldehyde free
  • Safe for all plumbing and holding tanks


FIRST USE: It is important to completely empty the holding tank and flush the system with clean water (fresh or sea) to remove any chemicals that may be present from previous products. This will rinse out and neutralize the holding tank environment and prepare your tank for the microbes to work.

ALL USES: Rinse the tank after each pump out then flush 2 ounces of ZCare Holding Tank Treatment plus 1 gallon of water per 20 Gallon capacity of tank through the head. ZCare Holding Tank Treatment is highly effective when used as directed in a holding tank free of all other chemical or enzyme products. ZCare Holding Tank Treatment must not be stored in direct sunlight or below 40° F. The tank must be properly ventilated to activate the microbes. Always obey local, state and federal laws when pumping out your boat.

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