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    1. eBay
    2. Pet Supplies
    3. Fish & Aquarium
    4. Heaters & Chillers
    5. External Fish Tank Heater
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    External Fish Tank Heater

    Side Refine Panel

    Shop by category

    • Fish & Aquarium
    • Heaters & Chillers
    • Air Pumps
    • Air Stones
    • Aquariums
    • Cleaning & Maintenance
    • CO2 Equipment
    • Coral & Live Rock
    • Decorations
    • Feeders
    • Filters
    • Filter Media & Accs.
    • Food
    • Gravel & Substrate
    • Health Care
    • Lighting & Hoods
    • Live Fish
      • Live Invertebrates
      • Live Plants
      • Meters & Controllers
      • Reverse Osmosis & Deionization
      • Tubing & Valves
      • UV Steriliser
      • Water Pumps
      • Water Tests & Treatment
      • Other Fish & Aquarium
    LessView less categories

    • Type

      • Inline Heater
      • Submersible Heater
      • Not specified

    • Aquarium Capacity

      • 200-399L
      • 400-750L
      • Not specified

    • Brand

    • Condition

      • New

    • Price

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    • Time: ending soonest
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    • List view

    139 results

    • 500W Aquarium Digital External Filter Heater Inline Water Thermostat Fish Tank

      500W Aquarium Digital External Filter Heater Inline Water Thermostat Fish Tank

      £25.99
      Click & Collect
      Free postage
      40 sold
    • 500W Aquarium Fish Tank Digital External Filter Heater Inline Water Thermostat

      500W Aquarium Fish Tank Digital External Filter Heater Inline Water Thermostat

      £24.99
      Free postage
      6 watching
    • NICREW Submersible Aquarium Heater 50W, Fish Tank Heater with External Digital

      NICREW Submersible Aquarium Heater 50W, Fish Tank Heater with External Digital

      £13.19
      Free postage
      4 watching
    • 500W Digital External Filter Fish Tank Heater Inline Aquarium Water Thermostat

      500W Digital External Filter Fish Tank Heater Inline Aquarium Water Thermostat

      £32.98
      Click & Collect
      Free postage
    • 500W Aquarium Digital External Filter Heater Fish Tank Inline Water Thermostat

      500W Aquarium Digital External Filter Heater Fish Tank Inline Water Thermostat

      £20.15
      £1.19 postage
    • 300W/500W External Filter Heater Fish Tank Inline Aquarium Water Thermostat 220V

      300W/500W External Filter Heater Fish Tank Inline Aquarium Water Thermostat 220V

      £29.99 to £32.99
      Click & Collect
      Free postage
    • Aquarium Heater Submersible Fish Tank Heater with External LED Digital Tropical

      Aquarium Heater Submersible Fish Tank Heater with External LED Digital Tropical

      £34.40
      Click & Collect
    • Aquael Inline Heater External Filter Thermostat Aquarium Fish Tank 300w 500W

      Aquael Inline Heater External Filter Thermostat Aquarium Fish Tank 300w 500W

      £54.95
      Click & Collect
      Free postage
      2 watching
    • Aquarium Heater Submersible Fish Tank Heater with External LED Digital Tropical

      Aquarium Heater Submersible Fish Tank Heater with External LED Digital Tropical

      £33.76
      Click & Collect
    • EXTERNAL AQUARIUM FILTER AND HEATER FOR TROPICAL FISH TANK EDEN FILTRATION UNIT

      EXTERNAL AQUARIUM FILTER AND HEATER FOR TROPICAL FISH TANK EDEN FILTRATION UNIT

      £94.95
      19 sold
    • Fish Tank Heater with External LED Temperature Controller,

      Fish Tank Heater with External LED Temperature Controller,

      £33.04
      Click & Collect
    • External Heater Thermostat For Aquarium Fish Tank 300w/500w Canister Ne w

      External Heater Thermostat For Aquarium Fish Tank 300w/500w Canister Ne w

      £24.12 to £24.46
      Free postage
    • Aquarium Heater with External Temperature Sensor Probe 300W/500W Fish Tank

      Aquarium Heater with External Temperature Sensor Probe 300W/500W Fish Tank

      £36.99
      Only 1 left.
    • Aquarium Heater Submersible Fish Tank Heater with External LED Digital Tropical

      Aquarium Heater Submersible Fish Tank Heater with External LED Digital Tropical

      £32.95
      Click & Collect
      Only 1 left.
    • Aquarium Heater Submersible Fish Tank Heater with External LED Digital Tropical

      Aquarium Heater Submersible Fish Tank Heater with External LED Digital Tropical

      £32.99
      Click & Collect
      Free postage
    • External Heater Thermostat for Aquarium Fish Tank Canister 300w and 500w

      External Heater Thermostat for Aquarium Fish Tank Canister 300w and 500w

      £26.22 to £26.59
      Free postage
    • Aquarium Heater Submersible Fish Tank Heater with External LED Digital Tropical

      Aquarium Heater Submersible Fish Tank Heater with External LED Digital Tropical

      £31.88
      Click & Collect
      Free postage
      Only 1 left.
    • Fish Tank Water Heater Temperature Control Aquarium External Sensitive Display

      Fish Tank Water Heater Temperature Control Aquarium External Sensitive Display

      £27.80 to £28.12
      £0.44 postage
    • Aquarium Heater Digital External 100w Water Fish Tank Adjustable Temperature

      Aquarium Heater Digital External 100w Water Fish Tank Adjustable Temperature

      £46.49
      Free postage
    • Aquarium Heater with External Temperature Sensor Probe 300W/500W Fish Tank

      Aquarium Heater with External Temperature Sensor Probe 300W/500W Fish Tank

      £32.99
      Click & Collect
    • Aquarium tropical fish tank LED digital thermostat heater + external controller

      Aquarium tropical fish tank LED digital thermostat heater + external controller

      £43.15 to £62.35
      Free postage
      7 watching
    • Submersible Aquarium Heater 50W, Fish Tank Heater with External Digital

      Submersible Aquarium Heater 50W, Fish Tank Heater with External Digital

      £15.99
    • External Heater Thermostat For Aquarium Fish Tank Canister 500w and 300w P4Q5

      External Heater Thermostat For Aquarium Fish Tank Canister 500w and 300w P4Q5

      £25.61 to £25.98
      Free postage
    • External Heater Thermostat For Aquarium Fish Tank Canister 500w 300w L0Z1

      External Heater Thermostat For Aquarium Fish Tank Canister 500w 300w L0Z1

      £22.43 to £25.07
      Free postage
    • Aquarium Heater Submersible External Fish Tank Small Adjustable Temperature 5W

      Aquarium Heater Submersible External Fish Tank Small Adjustable Temperature 5W

      £26.82
      Free postage
    • Aquarium Heater Submersible Fish Tank Heater with External LED Digital Tropical

      Aquarium Heater Submersible Fish Tank Heater with External LED Digital Tropical

      £33.48
      Click & Collect
    • Aquarium Heater Submersible Fish Tank Heater with External LED Digital Tropical

      Aquarium Heater Submersible Fish Tank Heater with External LED Digital Tropical

      £33.76
      Click & Collect
    • Aquarium Heater Submersible External Fish Tank Constant Temperature Controller

      Aquarium Heater Submersible External Fish Tank Constant Temperature Controller

      £123.41
      Free postage
    • Submersible Aquarium Heater Fish Tank LED External Thermostat Quartz Heating Ro

      Submersible Aquarium Heater Fish Tank LED External Thermostat Quartz Heating Ro

      £8.00 to £15.11
      Free postage
    • 300W/500W External Heater Thermostat for Aquarium Fish Tank Canister Filter 220V

      300W/500W External Heater Thermostat for Aquarium Fish Tank Canister Filter 220V

      £23.24 to £24.25
      £1.19 postage
      4 watching
    • 500W Aquarium Digital External Filter Heater Fish Tanks Inline Water Thermostat

      500W Aquarium Digital External Filter Heater Fish Tanks Inline Water Thermostat

      £22.79
      Free postage
    • External Heater Thermostat For Aquarium Fish Tank Canister 500w 300w and U3N4

      External Heater Thermostat For Aquarium Fish Tank Canister 500w 300w and U3N4

      £24.74 to £25.08
      Free postage
    • Aquarium Heater with External Temperature Sensor Probe 300W/500W Fish Tank...

      Aquarium Heater with External Temperature Sensor Probe 300W/500W Fish Tank...

      £36.69
      Click & Collect
      Free postage
    • External Heater Thermostat For Aquarium Fish Tank w 300w/500w Canister Ne K8H0

      External Heater Thermostat For Aquarium Fish Tank w 300w/500w Canister Ne K8H0

      £24.70 to £25.08
      Free postage
    • Aquarium Heater Submersible Fish Tank Heater with External LED Digital Tropical

      Aquarium Heater Submersible Fish Tank Heater with External LED Digital Tropical

      £34.84
      Click & Collect
      Only 1 left.
    • External Heater Thermostat For Aquarium Fish Tank 300w Canister 500w and Fi N1O4

      External Heater Thermostat For Aquarium Fish Tank 300w Canister 500w and Fi N1O4

      £23.38 to £23.51
      Free postage
    • 300W 500W Aquarium External Filter Heater Inline Water Thermostat Fish Tank

      300W 500W Aquarium External Filter Heater Inline Water Thermostat Fish Tank

      £31.99 to £32.98
      Click & Collect
      Free postage
    • External Heater LED display For aquarium tropic fish tank canister filter sump

      External Heater LED display For aquarium tropic fish tank canister filter sump

      £41.98 to £45.58
      Free postage
    • Aquarium Heater With External Temperature Sensor Probe 100W Fish Turtles Tank D

      Aquarium Heater With External Temperature Sensor Probe 100W Fish Turtles Tank D

      £14.80 to £16.00
      Free postage
    • 1X Aquarium Heater Fish Tank LED External Thermostat Quartz Heating Rod 220‑240V

      1X Aquarium Heater Fish Tank LED External Thermostat Quartz Heating Rod 220‑240V

      £8.10 to £15.41
      Free postage
    • Aquarium Heater Fish Tank LED External Thermostat Quartz Heating Rod 220‑240V

      Aquarium Heater Fish Tank LED External Thermostat Quartz Heating Rod 220‑240V

      £8.10 to £15.40
      Free postage
    • Aquarium Fish Tank Heater with External LED Digital Temperature Controller 500W

      Aquarium Fish Tank Heater with External LED Digital Temperature Controller 500W

      £35.99
      Click & Collect
    • Aquarium Heater Submersible Fish Tank Heater with External LED Digital Tropical

      Aquarium Heater Submersible Fish Tank Heater with External LED Digital Tropical

      4.5 out of 5 stars
      (12)12 product ratings - Aquarium Heater Submersible Fish Tank Heater with External LED Digital Tropical
      £33.65
      Click & Collect
      Free postage
      Only 1 left.
    • External Heater Thermostat For Aquarium Fish Tank and 500w Canister 300w S8H3

      External Heater Thermostat For Aquarium Fish Tank and 500w Canister 300w S8H3

      £26.22 to £26.59
      Free postage

    Results pagination - page 1

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