Welcome to Defender Canada! 
Water / Waste Holding Tanks
-
Dometic 40 HTS-T Waste Water Holding Tank System with Pump - 40 Gal - 322014012
$2,161.73 -
Dometic 28 HTS-T Waste Water Holding Tank System with Pump - 28 Gal - 322012812
$2,021.48 -
Dometic 10 HTS-T Waste Water Holding Tank System with Pump - 10 Gal - 322721012
$1,596.65 -
Dometic 55 HTS-HRZ Basic Series Waste Water Holding Tank System - 55 Gal - 322840551
$986.44 -
Dometic 40 HTS-HRZ Basic Series Waste Water Holding Tank System - 34 Gal - 322840401
$926.49 -
Dometic 15 HTS-HRZ Basic Series Waste Water Holding Tank System - 15 Gal - 322840151
$904.56 -
Dometic 15 HTS-VRT Basic Series Waste Water Holding Tank System - 15 Gal - 322840152
$904.56 -
Raritan TankAssure Control Panel with Sensor - 15600
$860.55 -
Dometic 30 HTS-HRZ Basic Series Waste Water Holding Tank System - 28 Gal - 322840301
$827.21 -
Nauta Heavy Duty Diesel Fuel and Waste Tank - 14.5 Gal - FT915122
$803.62 -
Dometic 20 HTS-VRT Basic Series Waste Water Holding Tank System - 18 Gal - 322840202
$799.47 -
Veratron Marine NMEA 2000 Liquid Level Sensor - B00041501
$789.00 -
Dometic 20 HTS-HRZ Basic Series Waste Water Holding Tank System - 18 Gal - 322840201
$784.75 -
Raritan Holding Tank Monitor - 1510012
$739.34 -
Dometic 25 HTS-HRZ Basic Series Waste Water Holding Tank System - 25 Gal - 322800251
$722.08 -
Dometic 12 HTS-HRZ Basic Series Waste Water Holding Tank System - 11 Gal - 322840121
$713.21 -
Dometic 12 HTS-VRT Basic Series Waste Water Holding Tank System - 11 Gal - 322840122
$710.27 -
Raritan TankAssure NMEA2000 Adapter - 15630
$571.44 -
Veratron VDO Fresh Water Level Sender - 226-828-001-001K
$562.98 -
Groco SweetTank Odor Neutralization System
$530.58 - $539.34 -
Nauta Flexible Fresh Water Tank
$524.76 - $889.77 -
Dometic DTM04 TankWatch 4-Level Tank Monitor System
$524.76 -
Raritan TankAssure Sensor Kit - 15610
$521.82 -
Dometic Multi-Level Tank Monitor System
$495.52 -
Groco Tank Level Sensor Assembly - 450 ASSY
$464.86 -
Blue Sea Systems M2 OLED Digital Tank Monitor - 1839
$403.54 -
Raritan Holding Tank Monitor Indicator Panel - 1520012
$396.24 -
Vetus Flexible Waste Water Holding Tank
$394.83 - $780.27 -
Veratron Waste Water Level Sensor with Sealing Kit #930
$376.39 - $719.36 -
Groco Tank Level Sensor - 08-0004-02
$355.36 -
9% offLIST 3-Level Waste Tank Monitor - TM-332111
$346.62$312.02 -
Vetus Flexible Fresh Water Tank
$282.41 - $532.07 -
19% offLIST 3-Level Water Tank Monitor - TM-331111
$346.62$277.42 -
SCAD TM1 Tank Monitor with External Sensor Strip - 10040
$273.60 -
Groco 4-Way Tank Selector Kit - TS-350-T
$260.48 -
Vetus Ultrasonic Fluid Level Sensor
$257.54 - $269.22 -
Vetus Universal Synthetic Tank
$244.73 - $1,272.61 -
Veratron Fresh Water Level Sensor with Sealing Kit #930
$235.79 - $574.38 -
Veratron Fresh Water Level Sensor with Sealing Kit #370
$235.79 - $578.76 -
Dometic DTM01 Holding Tank Monitor - 313002311
$229.80 -
Vetus Universal Tank Float Sensor
$228.34 - $336.38 -
LIST Single-Level Waste Tank Alarm - 3/4 Alert - TM-132111
$223.98 -
SCAD TM2 Tank Monitor for Two Tanks - 10041
$222.50 -
14% offPlastimo Rectangular Flexible Water Tank - 52.8 Gal - 70956
$245.91$209.12 -
Raritan Tank Sensor Module Kit - 15101
$181.62 -
Blue Sea Systems VSM 422 Vessel Systems Monitor Tank Sender
$167.02 - $168.48 -
14% offPlastimo Triangular Flexible Water Tank - 31.7 Gal - 70957
$186.04$158.23 -
Raritan Tank Sensor - Float Style - STCFL
$156.80
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!