Marine Holding Tanks, Treatments & Sensors

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CategoryBoat Plumbing Fixtures & Supplies
CategoryMarine Holding Tanks, Treatments & Sensors
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Marine Holding Tanks, Treatments & Sensors at Fisheries Supply


Marine holding tanks are essential for storing wastewater and sewage on boats until it can be properly disposed of. These tanks, often referred to as marine waste holding tanks or boat holding tanks, play an important role in maintaining a hygienic and environmentally friendly boating experience. Proper maintenance and the use of appropriate treatments are key to ensuring the efficiency of these systems. We offer holding tanks from major brands, such as Raritan Tank Deodorant, Tank Tender, or Thetford.

Types of Marine Holding Tanks

Marine black water tanks come in various sizes and materials, including steel, fiberglass, and plastic.

The choice of tank depends on several factors:
  • Capacity Requirements: Based on the number of people on board and the duration of the voyage.
  • Material Compatibility: Ensuring the tank material is suitable for the type of waste being stored to prevent chemical reactions and corrosion.
  • Installation Space: The available space on the boat for mounting the tank, often in the bilge or bow area.

Key Features and Components

  • Waste Treatment: Biodegradable chemicals are commonly used to break down waste and control odors, keeping the tank sanitary.
  • Sensors and Monitors: Sensors monitor the tank's level and alert you when it needs to be emptied, preventing overflows and ensuring timely maintenance.
  • Vent Lines: Proper venting is crucial for odor control, allowing fresh air to exchange with the gases produced by the waste. In some cases, an odor filter is needed.

Tank Maintenance

Regular cleaning of the marine waste tank is essential to prevent the buildup of sludge and odors.

This can be done by:
  • Flushing with Fresh Water: Periodically filling the tank with fresh water and a biodegradable detergent, then pumping it out.
  • Using Additives: Adding enzyme or bacterial treatments to break down waste and control odors.
Fisheries Supply is your go-to source for all marine holding tank needs.

We offer a broad range of products, including:
  • Marine Waste Holding Tanks: Available in various sizes and materials to suit different boats and requirements.
  • Deodorizers and Treatments: Biodegradable chemicals and treatments to keep your tank clean and odor-free. Read our article on choosing a holding tank treatment.
  • Tank Sensors and Monitors: Advanced sensors to monitor tank levels and alert you when it's time to empty the tank.
  • Tank Fittings: Essential fittings and accessories for installing and maintaining your marine waste system.
Proper maintenance and the right equipment are crucial for managing marine holding tanks effectively and keeping them USCG-compliant.

Shop for boat waste tanks or deodorizers today and save – or browse our other plumbing categories such as boat deck fills, marine water tanks or boat fuel tank vents.