Collection: Holding Tanks

From low-profile black water tanks to carbon filters and tank hose connection kits, we stock everything you need to manage waste on board cleanly, safely, and in line with marine regulations.

Holding tanks play a crucial role in marine sanitation, storing grey and black water until it can be properly disposed of. When refitting your system or replacing worn-out parts, these are high-quality components to keep your boat compliant and odour-free.

Wide Selection - Waste tank indicators, filters, sensors, adaptors, extraction pipes, and more
Reliable Brands - Marine-grade parts from Can SB, Whale, Vetus, and Ultraflex
Fast UK Delivery - Get back to cruising sooner with quick delivery on all orders
Built for Boats - All parts tested and suitable for marine installations

Need help choosing the right setup for your plumbing or tank fittings? Contact our team!

Shop Holding Tanks & Marine Sanitation Now - Upgrade your waste system before it causes problems.

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26 Results
  • Vetus NSF16FE Spare Filter Element for Vetus Large No Smell Filters
    Vendor: Vetus
    Regular price
    £23.50
    Sale price
    £23.50
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  • Vetus NSF16FES Spare Filter Element for Vetus Small No Smell Filters
    Vendor: Vetus
    Regular price
    £14.50
    Sale price
    £14.50
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  • Uflex Waste Tank Indicator White
    Vendor: Uflex
    Regular price
    £49.00
    Sale price
    £49.00
    Regular price
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  • Uflex Waste Tank Indicator Black
    Vendor: Uflex
    Regular price
    £49.00
    Sale price
    £49.00
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  • Whale Grey Waste Tank 8L 12/24V with IC Control (No Pump)
    Vendor: Whale
    Regular price
    £195.50
    Sale price
    £195.50
    Regular price
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  • Uflex Stainless Steel Waste Tank Sensor 100mm
    Vendor: Ultraflex
    Regular price
    £84.00
    Sale price
    £84.00
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  • Uflex Stainless Steel Waste Tank Sensor 205mm
    Vendor: Ultraflex
    Regular price
    £96.00
    Sale price
    £96.00
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  • Uflex Stainless Steel Waste Tank Sensor 305mm
    Vendor: Ultraflex
    Regular price
    £110.50
    Sale price
    £110.50
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  • Uflex Stainless Steel Waste Tank Sensor 410mm
    Vendor: Ultraflex
    Regular price
    £123.50
    Sale price
    £123.50
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  • Uflex Waste Tank Sensor Adaptor 1-1/4" BSP
    Vendor: Ultraflex
    Regular price
    £26.50
    Sale price
    £26.50
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  • Can Black Water Tank Low Profile 45 x 39 x 20cm 28L
    Vendor: can sb
    Regular price
    £216.99
    Sale price
    £216.99
    Regular price
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  • Can Black Water Tank Med Profile 55 x 39 x 29cm 53L
    Vendor: can sb
    Regular price
    £195.99
    Sale price
    £195.99
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  • Can Black Water Tank Med Profile 85 x 39 x 29cm 83L
    Vendor: can sb
    Regular price
    £234.99
    Sale price
    £234.99
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  • Can Black Water Tank High Profile 50 x 33 x 33cm 40L
    Vendor: can sb
    Regular price
    £136.99
    Sale price
    £136.99
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  • Can Black Water Tank High Profile 60 x 33 x 33cm 50L
    Vendor: can sb
    Regular price
    £160.99
    Sale price
    £160.99
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  • Can Black Water Tank High Profile 70 x 33 x 33cm 60L
    Vendor: can sb
    Regular price
    £192.99
    Sale price
    £192.99
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  • Whale Grey Waste Tank 16L 12/24V with IC Control (No Pump)
    Vendor: Whale
    Regular price
    £296.00
    Sale price
    £296.00
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  • Can New Waste Tank Porthole Connection Plate
    Vendor: Can sb
    Regular price
    £59.00
    Sale price
    £59.00
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  • Can Old Black Water Tank Hose Connection Kit
    Vendor: Can sb
    Regular price
    £65.00
    Sale price
    £65.00
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  • Can Waste Tank Vent Carbon Filter 20/25mm
    Vendor: Can sb
    Regular price
    £72.50
    Sale price
    £72.50
    Regular price
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  • Can New Black Water Tank Hose Con Kit + 1-1/4" Plug
    Vendor: Can sb
    Regular price
    £45.50
    Sale price
    £45.50
    Regular price
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  • Whale Grey Waste Tank Replacement Lid & Sensor
    Vendor: Whale
    Regular price
    £140.50
    Sale price
    £140.50
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  • Vetus Vacuum Valve for Waste Water Tanks (56mm)
    Vendor: Vetus
    Regular price
    £39.00
    Sale price
    £39.00
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  • Vetus Waste Tank Extraction Pipe (90 Degree / 780mm)
    Vendor: Vetus
    Regular price
    £38.00
    Sale price
    £38.00
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  • Vetus Waste Tank Extraction Pipe (Straight / 780mm)
    Vendor: Vetus
    Regular price
    £35.00
    Sale price
    £35.00
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  • Vetus Fitting Kit for Waste Water Tanks
    Vendor: Vetus
    Regular price
    £52.50
    Sale price
    £52.50
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