Water / Waste Holding Tanks

About Water / Waste Holding Tanks

Water and Waste Holding Tanks & Fittings

Water / Waste Holding Tanks & Fittings - Defender offers parts galore and a selection of marine holding tanks for waste holding, black water tanks and marine water tanks that will fit just about any boat and application.

What size marine holding tank do you need?

Consider first the boat's needs. Defender offers a full line of marine holding tanks that will fit below any and all decks. The shape and size of your new marine holding tank, the location of the intake and the construction of the tank itself will more accurately determine how many gallons you need.

Boat holding tank construction ABC's.

Rigid tanks are built from polyethylene plastic that is super strong and holds odors inside. Sealed pipe fittings and plugs offer easy conversion from waste storage to water storage on most tanks at Defender. If flexible tanks are a necessity due to boat storage limitations look for 3-layer construction with welded seams.

How long do marine waste holding tanks last?

High quality marine holding tanks from Defender should last as long as your love affair with your boat! High strength plastic with pre drilled fittings and sealed plugs ensure that the chance for leaks are minimal and a holding tank placed under the deck will stay put for quite some time!

Water / Waste Holding Tanks

Dometic DVF Holding Tank Vent Filter Replacement Cartridge - 9108849515

Todd Fresh Water/Waste Water Holding Tank

SCAD TM1 Tank Monitor with External Sensor Strip - 10040

Plastimo Rectangular Flexible Water Tank - 26.4 Gal - 70965

SCAD TM2 Tank Monitor for Two Tanks - 10041

Dometic DTM04 TankWatch 4-Level Tank Monitor System

Vetus Flexible Fresh Water Tank

Plastimo Square Flexible Fresh Water Tank - 13.2 Gal - 70963

SCAD Technologies External Tape-On Tank Sensor - 10022

Plastimo Rectangular Flexible Water Tank - 52.8 Gal - 70956

Plastimo Triangular Flexible Water Tank - 31.7 Gal - 70957

Vetus Flexible Waste Water Holding Tank

Nauta Flexible Fresh Water Tank

Maretron NMEA 2000 Tank Level Monitor - TLM100-01

Veratron VDO Fresh Water Level Sender - 226-828-001-001K

Groco 4-Way Tank Selector Kit - TS-350-T

Dometic 20 HTS-VRT Basic Series Waste Water Holding Tank System - 18 Gal - 9108555503

Vetus Universal Synthetic Tank

Nauta Flexible Tank Fill Fitting - FTP2221

Dometic Multi-Level Tank Monitor System

Raritan Tank Sensor - Stick-On Style - STCTSA

LIST 3-Level Waste Tank Monitor - TM-332111

Veratron Level Sensor Single Station with Seal Kit - 226-801-015-001G

Vetus Inspection Lid

SCAD Technologies Internal Tank Sensor - 10021

Groco Tank Level Sensor - 08-0004-02

Vetus Spare Filter Element for No-Smell Filter - Large - NSF16FE

Vetus Flexible Tank Fitting

Dometic DTM01 Holding Tank Monitor - 9108688891

Raritan TankAssure Control Panel with Sensor - 15600

Johnson Viking Power 16 Grey Water Tank with Ultima Switch - 09-13384

Vetus Universal Tank Float Sensor

Groco SweetTank Odor Neutralization System

Maretron Tank Level NMEA 2000 Adapter - TLA100-01

Blue Sea Systems M2 OLED Digital Tank Monitor - 1839

Todd Holding Tank Fitting Adapter Kit - 93-2221

Vetus Connection Kit

Maretron SAE 5-Bolt Pattern Focus Tube - TFTDBE-5H

Vetus Ultrasonic Fluid Level Sensor

Maretron TFT-5H-Focus Tube Kit - TFT-5H

Nauta Flexible Tank Drawing Nipple - FTP311

Blue Sea Mini OLED Tank Meter

Vetus Curved Extraction Pipe - WTS78038B

Vetus Fuel Connection Kit Filler

Vetus No-Smell Filter with Connections

Nauta Flexible Tank Vent Fitting - FTPE300

SCAD Technologies Adapter Plate - 10029

Veratron Fresh Water Level Sensor with Sealing Kit #370

About Water / Waste Holding Tanks

Water and Waste Holding Tanks & Fittings

What size marine holding tank do you need?

Boat holding tank construction ABC's.

How long do marine waste holding tanks last?

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