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    • Aquarium Heaters & Chillers
    • Aquarium Submersible Heaters

    Aquarium Submersible Heaters

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    Best selling

    • Hidom 300W Submersible Aquarium Fish Tank Shockproof Thermostat Heater - Black/Transparent
      Hidom 300W Submersible Aquarium Fish Tank Shockproof Thermostat Heater - Black/Transparent
      4.6 out of 5 stars (18)Total ratings 18
      £13.95 New
    • Fluval E300 Advanced Electronic Aquarium Heater 300 Watt Heat Water Fish Tank
      Fluval E300 Advanced Electronic Aquarium Heater 300 Watt Heat Water Fish Tank
      4.8 out of 5 stars (45)Total ratings 45
      £46.49 New
      £15.00 Used
    • Eheim Aquarium Thermostat Heater - 100W
      Eheim Aquarium Thermostat Heater - 100W
      4.8 out of 5 stars (5)Total ratings 5
      £21.90 New
    • Hidom HT-8500 500W Submersible Aquarium Thermostat Heater
      Hidom HT-8500 500W Submersible Aquarium Thermostat Heater
      4.8 out of 5 stars (29)Total ratings 29
      £16.81 New
    • EHEIM 3619110 300W Aquarium Thermostat Heater
      EHEIM 3619110 300W Aquarium Thermostat Heater
      4.8 out of 5 stars (24)Total ratings 24
      £27.90 New
      £25.85 Used
    • Fluval M150 Submersible Premium Aquarium Heater (A783)
      Fluval M150 Submersible Premium Aquarium Heater (A783)
      5 out of 5 stars (4)Total ratings 4
      £22.49 New
    • Aquarium Heater 300w - Juwel Aquaheat Fish Tank Thermostat Rio Vision Rekord
      Aquarium Heater 300w - Juwel Aquaheat Fish Tank Thermostat Rio Vision Rekord
      £9.95 New
    • Hidom HT-8100 100W Aquarium Heater
      Hidom HT-8100 100W Aquarium Heater
      5 out of 5 stars (20)Total ratings 20
      £12.49 New
    • All

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    • Distance: nearest first
    • List view

    1,299 results

    • Type: Submersible Heater - Remove filter
      • Submersible Heater filter applied
      • EHEIM
      • Fluval
      • Interpet
      • Juwel
      • Superfish
      • Unbranded
      • All listings filter applied
    • Hidom Submersible Tropical Fish Tank Aquarium Heater & Thermostat (7 Sizes)
      SPONSORED

      Hidom Submersible Tropical Fish Tank Aquarium Heater & Thermostat (7 Sizes)

      4.5 out of 5 stars (18)18 product ratings - Hidom Submersible Tropical Fish Tank Aquarium Heater & Thermostat (7 Sizes)
      £2.45 to £13.95
      2,301 sold
    • Hepo Submersible Aquarium Fish Tank Tropical Heater Thermostat HP-605 25 to 300w
      SPONSORED

      Hepo Submersible Aquarium Fish Tank Tropical Heater Thermostat HP-605 25 to 300w

      £9.99 to £13.49
      Click & Collect
      1,003 sold
    • Submersible Fish Tank Aquarium Heater Thermostat Thermometer 25W upto 500W
      SPONSORED

      Submersible Fish Tank Aquarium Heater Thermostat Thermometer 25W upto 500W

      £9.79 to £16.99
      Click & Collect
      Free postage
    • Hidom ProHeat Quartz Aquarium Heater Submersible Fish Tank Thermostat 25 to 500w
      SPONSORED

      Hidom ProHeat Quartz Aquarium Heater Submersible Fish Tank Thermostat 25 to 500w

      5 out of 5 stars (29)29 product ratings - Hidom ProHeat Quartz Aquarium Heater Submersible Fish Tank Thermostat 25 to 500w
      £11.45 to £18.45
      Click & Collect
      1,443 sold
    • DD 350w Titanium Heater + Dual Heating & Cooling Controller.

      DD 350w Titanium Heater + Dual Heating & Cooling Controller.

      £60.00
      1 bid
      £4.45 postage
      Ending Today at 7:39PM BST28m 32sClick & Collect
    • Hidom Aquarium Heater Submersible Fish Tank Heating + FREE THERMOMETER

      Hidom Aquarium Heater Submersible Fish Tank Heating + FREE THERMOMETER

      4.5 out of 5 stars (22)22 product ratings - Hidom Aquarium Heater Submersible Fish Tank Heating + FREE THERMOMETER
      £11.45 to £14.49
      Click & Collect
      1,370 sold
    • Aquarium Tropical / Marine Fish Tank - Submersible Adjustable Temp Water Heater

      Aquarium Tropical / Marine Fish Tank - Submersible Adjustable Temp Water Heater

      5 out of 5 stars (18)18 product ratings - Aquarium Tropical / Marine Fish Tank - Submersible Adjustable Temp Water Heater
      £10.99 to £14.29
      Click & Collect
    • EHEIM THERMOCONTROL HEATER AQUARIUM THERMOSTAT TROPICAL MARINE JAGER FISH TANK

      EHEIM THERMOCONTROL HEATER AQUARIUM THERMOSTAT TROPICAL MARINE JAGER FISH TANK

      5 out of 5 stars (24)24 product ratings - EHEIM THERMOCONTROL HEATER AQUARIUM THERMOSTAT TROPICAL MARINE JAGER FISH TANK
      £18.35 to £27.90
      Click & Collect
      1,004 sold
    • Submersible Aquarium Heater Digital Fish Tank Heater with Automatic Temperature

      Submersible Aquarium Heater Digital Fish Tank Heater with Automatic Temperature

      £19.29
      Click & Collect
      509 sold
    • HITOP 25W Super Accurate Aquarium Heater, Mini Preset Heater

      HITOP 25W Super Accurate Aquarium Heater, Mini Preset Heater

      £6.99
      Click & Collect
      Free postage
      or Best Offer
      16 sold
    • Aquarium Water Heater Tropical / Marine Fish Tank Submersible Adjustable Temp

      Aquarium Water Heater Tropical / Marine Fish Tank Submersible Adjustable Temp

      £8.49 to £10.99
      Click & Collect
      Free postage
    • TROPICAL ECO AQUARIUM FISH TANK HEATER SUBMERSIBLE STAT 25W 50W 100W 200W 300W

      TROPICAL ECO AQUARIUM FISH TANK HEATER SUBMERSIBLE STAT 25W 50W 100W 200W 300W

      £11.29
      Click & Collect
      1,140 sold
    • Aquarium Heater Submersible Tropical Fish Tank Heating Reliable 25w-300w

      Aquarium Heater Submersible Tropical Fish Tank Heating Reliable 25w-300w

      £9.95 to £13.95
      Click & Collect
      124 sold
    • New Aquarium Fish Tank Heater Submersible Thermostat Heater Heating Rod LED
      SPONSORED

      New Aquarium Fish Tank Heater Submersible Thermostat Heater Heating Rod LED

      £11.99
      Click & Collect
      Free postage
      or Best Offer
    • Mini Temperature Aquarium Thermostat Submersible Fish Tank Heater Quartz Glass
      SPONSORED

      Mini Temperature Aquarium Thermostat Submersible Fish Tank Heater Quartz Glass

      £7.99 to £12.99
      Click & Collect
      Free postage
      5 watching
    • Aquarium Fish Tank Heater Guard with Suction Cups Fits 25w to 300w
      SPONSORED

      Aquarium Fish Tank Heater Guard with Suction Cups Fits 25w to 300w

      £5.39
      Click & Collect
      1,123 sold
    • FLUVAL E HEATER 50W,100W,200W,300W ELECTRONIC FISH TANK E50,E100,E200,E300

      FLUVAL E HEATER 50W,100W,200W,300W ELECTRONIC FISH TANK E50,E100,E200,E300

      5 out of 5 stars (45)45 product ratings - FLUVAL E HEATER 50W,100W,200W,300W ELECTRONIC FISH TANK E50,E100,E200,E300
      £40.49 to £46.49
      Click & Collect
    • Fluval E Series 50w 100w 200w 300w Aquarium Heater

      Fluval E Series 50w 100w 200w 300w Aquarium Heater

      £35.99 to £37.49
      Click & Collect
    • 2x FLUVAL AQUARIUM FISH TANK HEATERS 200W + 100W

      2x FLUVAL AQUARIUM FISH TANK HEATERS 200W + 100W

      £29.99
      Click & Collect
      Free postage
    • Digital LED Aquarium Water Heater Submersible Fish Tank Thermostat Heating Rod

      Digital LED Aquarium Water Heater Submersible Fish Tank Thermostat Heating Rod

      £19.99 to £24.99
      Click & Collect
      Free postage
    • Betta Compact Aquarium Fish Tank Heater 100 Watt

      Betta Compact Aquarium Fish Tank Heater 100 Watt

      £3.99
      0 bids
      £3.95 postage
      Ending 30 May at 6:08PM BST6d 22h
    • 10 x AQUARIUM FISH TANK SUCTION CUPS SUCKERS CLIPS 4/6MM AIR LINE TUBE UP1403

      10 x AQUARIUM FISH TANK SUCTION CUPS SUCKERS CLIPS 4/6MM AIR LINE TUBE UP1403

      £3.95
      682 sold
    • Submersible Tropical Fish Tank Aquarium Heater & Thermostat Aqua Nova Fish Hot

      Submersible Tropical Fish Tank Aquarium Heater & Thermostat Aqua Nova Fish Hot

      £7.99 to £15.99
      Free postage
      13 watching
    • Mini Aquarium Fish Tank Heater USB Heating Rod Thermostat Heater Submersible UK

      Mini Aquarium Fish Tank Heater USB Heating Rod Thermostat Heater Submersible UK

      £13.81
      or Best Offer
    • Betta Compact Aquarium Fish Tank Heater 50 Watt

      Betta Compact Aquarium Fish Tank Heater 50 Watt

      £2.99
      0 bids
      £3.95 postage
      Ending 30 May at 5:57PM BST6d 22h
    • Micro Plastic Aquarium Fish Tank Heater Preset 25 Degrees For Small Nano Tanks

      Micro Plastic Aquarium Fish Tank Heater Preset 25 Degrees For Small Nano Tanks

      £12.99 to £14.99
      Click & Collect
      957 sold
    • Submersible Aquarium Heater 25W/50W/100W/200W/300W Fish Tank Thermostat- UK PLUG

      Submersible Aquarium Heater 25W/50W/100W/200W/300W Fish Tank Thermostat- UK PLUG

      £9.29 to £10.99
      Click & Collect
    • AQUAEL PLATINUM SUBMERSIBLE  HEATER THERMOSTAT FOR AQUARIUM FISH TANK HEATING

      AQUAEL PLATINUM SUBMERSIBLE HEATER THERMOSTAT FOR AQUARIUM FISH TANK HEATING

      £6.64 to £27.95
      Click & Collect
      11 watching
    • HYDRO-THERM AQUARIUM FISH TANK HEATER STAT SUBMERSIBLE THERMOSTAT TROPICAL
      SPONSORED

      HYDRO-THERM AQUARIUM FISH TANK HEATER STAT SUBMERSIBLE THERMOSTAT TROPICAL

      5 out of 5 stars (1)1 product ratings - HYDRO-THERM AQUARIUM FISH TANK HEATER STAT SUBMERSIBLE THERMOSTAT TROPICAL
      £10.50 to £15.95
      Click & Collect
    • 25W-300W Aquarium Submersible Heater Fish Tortoise Tank Water Auto UK
      SPONSORED

      25W-300W Aquarium Submersible Heater Fish Tortoise Tank Water Auto UK

      £8.31 to £10.99
      Free postage
    • SZELAM Fish Tank Heater, Aquarium Heaterm 300w Quartz Glass Submersible Heater
      SPONSORED

      SZELAM Fish Tank Heater, Aquarium Heaterm 300w Quartz Glass Submersible Heater

      £30.99
    • 300W AQUARIUM FISH TANK ECO HEATER HEATING SUBMERSIBLE TEMPERATURE STAT TEMP
      SPONSORED

      300W AQUARIUM FISH TANK ECO HEATER HEATING SUBMERSIBLE TEMPERATURE STAT TEMP

      4 out of 5 stars (8)8 product ratings - 300W AQUARIUM FISH TANK ECO HEATER HEATING SUBMERSIBLE TEMPERATURE STAT TEMP
      £10.95
      Click & Collect
      606 sold
    • Betta Heater Compact Thermostat 200W New Aquarium Aquatic

      Betta Heater Compact Thermostat 200W New Aquarium Aquatic

      £0.99
      1 bid
      £4.35 postage
      Ending Tuesday at 6:12PM BST23h 1m
    • Resun Aquarium Thermostat Heater

      Resun Aquarium Thermostat Heater

      £5.00
      1 bid
      Free postage
      Ending Thursday at 11:26AM BST2d 16hClick & Collect
    • biOrb Intelligent Heater with Powerpod

      biOrb Intelligent Heater with Powerpod

      4.5 out of 5 stars (10)10 product ratings - biOrb Intelligent Heater with Powerpod
      £40.00
      0 bids
      £8.59 postage
      Ending Sunday at 9:48AM BST5d 14h
      or Best Offer
      Click & Collect
    • 300w fish tank heater.submersible

      300w fish tank heater.submersible

      £9.99
      Click & Collect
    • 50W AQUARIUM FISH TANK ECO HEATER HEATING SUBMERSIBLE TEMPERATURE STAT EH-50

      50W AQUARIUM FISH TANK ECO HEATER HEATING SUBMERSIBLE TEMPERATURE STAT EH-50

      £98.50
      Click & Collect
      472 sold
    • Betta Premium Digital Aquarium LED Submersible Water Heater Fish Tank Thermostat

      Betta Premium Digital Aquarium LED Submersible Water Heater Fish Tank Thermostat

      £15.65 to £19.22
      Click & Collect
      Free postage
    • TROPICAL-REEF HYDRO-THERM AQUARIUM HEATER FISH TANK THERMOSTAT STAT SUBMERSIBLE
      SPONSORED

      TROPICAL-REEF HYDRO-THERM AQUARIUM HEATER FISH TANK THERMOSTAT STAT SUBMERSIBLE

      £10.95 to £15.95
      Click & Collect
      112 sold
    • Hidom Submersible Tropical Fish Tank Aquarium Heater & Thermostat + Thermometer
      SPONSORED

      Hidom Submersible Tropical Fish Tank Aquarium Heater & Thermostat + Thermometer

      £10.45 to £13.95
      Click & Collect
      1,627 sold
    • INTERPET DELTATHERM AQUARIUM HEATER 50W 100W 150W 200W 300W FISH TANK TROPICAL

      INTERPET DELTATHERM AQUARIUM HEATER 50W 100W 150W 200W 300W FISH TANK TROPICAL

      4 out of 5 stars (8)8 product ratings - INTERPET DELTATHERM AQUARIUM HEATER 50W 100W 150W 200W 300W FISH TANK TROPICAL
      £20.99 to £22.99
      Click & Collect
      1,212 sold
    • Aquarium Heater Fish Tank Submersible Thermostat with Thermometer HIDOM

      Aquarium Heater Fish Tank Submersible Thermostat with Thermometer HIDOM

      5 out of 5 stars (1)1 product ratings - Aquarium Heater Fish Tank Submersible Thermostat with Thermometer HIDOM
      £10.95 to £13.49
      769 sold
    • Interpet Aquatherm Aquarium Heater 200w Fish Tank

      Interpet Aquatherm Aquarium Heater 200w Fish Tank

      £3.00
      1 bid
      £3.35 postage
      Ending Sunday at 8:15PM BST6d 1h
    • Aquael Plastic Ultra Heater 15-200W Tropical Aquarium Heating Thermostat Fish

      Aquael Plastic Ultra Heater 15-200W Tropical Aquarium Heating Thermostat Fish

      £27.99 to £37.95
      Click & Collect
      146 sold
    • Interpet Nano Stat Aquarium Heater 10w 25w Fish Tank Thermostat Tropical

      Interpet Nano Stat Aquarium Heater 10w 25w Fish Tank Thermostat Tropical

      5 out of 5 stars (11)11 product ratings - Interpet Nano Stat Aquarium Heater 10w 25w Fish Tank Thermostat Tropical
      £1.95 to £19.95
      136 sold
    • AQUAMEDIC TITANIUM HEATER 100W,200W,300W,500W FISH TANK AQUARIUM MARINE TROPICAL

      AQUAMEDIC TITANIUM HEATER 100W,200W,300W,500W FISH TANK AQUARIUM MARINE TROPICAL

      £35.99 to £65.99
      Click & Collect
      37 sold
    • Fluval M Premium Heater Tropical Metal Heating Fish Tank Aquarium Thermostat

      Fluval M Premium Heater Tropical Metal Heating Fish Tank Aquarium Thermostat

      5 out of 5 stars (7)7 product ratings - Fluval M Premium Heater Tropical Metal Heating Fish Tank Aquarium Thermostat
      £19.99 to £24.99
      Click & Collect

    Results pagination - page 1

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    Highest-rated products

    See all- Highest-rated products
    • Fluval E300 Advanced Electronic Aquarium Heater 300 Watt Heat Water Fish Tank
      Fluval E300 Advanced Electronic Aquarium Heater 300 Watt Heat Water Fish Tank
      4.8 out of 5 stars (45)Total ratings 45
      100% agree - Would recommend
      £46.49 New
      £15.00 Used
    • Hidom HT-8500 500W Submersible Aquarium Thermostat Heater
      Hidom HT-8500 500W Submersible Aquarium Thermostat Heater
      4.8 out of 5 stars (29)Total ratings 29
      100% agree - Would recommend
      £16.81 New
    • EHEIM 3619110 300W Aquarium Thermostat Heater
      EHEIM 3619110 300W Aquarium Thermostat Heater
      4.8 out of 5 stars (24)Total ratings 24
      88% agree - Would recommend
      £27.90 New
      £25.85 Used
    • Superfish 2 in 1 Digital Smart 55w Aquarium Heater Thermometer Fish Tank Mini
      Superfish 2 in 1 Digital Smart 55w Aquarium Heater Thermometer Fish Tank Mini
      4.8 out of 5 stars (24)Total ratings 24
      89% agree - Would recommend
      £21.95 New
    • Hidom HT-8100 100W Aquarium Heater
      Hidom HT-8100 100W Aquarium Heater
      5 out of 5 stars (20)Total ratings 20
      100% agree - Would recommend
      £12.49 New
    • All Pond Solutions Aquarium Fish Tank Submersible Heater 200 W
      All Pond Solutions Aquarium Fish Tank Submersible Heater 200 W
      4.9 out of 5 stars (18)Total ratings 18
      100% agree - Would recommend
      £13.19 New
    • D-D Dual Temperature Controller
      D-D Dual Temperature Controller
      4.8 out of 5 stars (15)Total ratings 15
      100% agree - Would recommend
      £46.95 New
      £39.00 Used
    • BOYU Aquarium Fish Tank Heater Guard Protector
      BOYU Aquarium Fish Tank Heater Guard Protector
      4.7 out of 5 stars (36)Total ratings 36
      100% agree - Would recommend
      £7.19 New

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