External Fish Tank Heater

72 results

AQQA Aquarium Heater,50w Fish Tank Heater with 59-93°F External Controller…
Brand new
£29.99
Free postage
Click & Collect
Inline Aquarium Heater External Filter Thermostat Fish Tank Digital 300W 500W
Brand new · Unbranded
£33.98
Free postage
Click & Collect
In-Line External Aquarium Heater 150W 300W 500W Fish Tank Temperature Controller
Brand new
£63.59 to £67.19
Free postage
OASE FILTOSMART THERMO 300 EXTERNAL AQUARIUM FILTER HEATER FISH TANK FILTRATION
Brand new · OASE
(1)
£122.49
Free postage
Click & Collect
3 watching
Aquael Inline Aquarium Heater External Filter Thermostat Fish Tank 300w 500W
Brand new
£49.95 to £59.95
Free postage
Click & Collect
29 sold
Hydor ETH External Heater In-Line 300W 16mm Aquarium Fish Tank Temperature
Brand new · Hydor
(7)
£52.95
Free postage
Click & Collect
55 sold
100W Aquarium Heater,Submersible Fish Tank Heater with External Digital
Brand new
(1)
£19.99
Free postage
Click & Collect
Only 1 left.
Hydor ETH External Heater In-Line 300W 16mm Aquarium Fish Tank Temperature
Brand new · Hydor
(7)
£40.00
or Best Offer
£3.45 P&P
Click & Collect
Aquael Flow Inline Heater External Filter Thermostat Aquarium Fish Tank
Brand new
£54.95 to £62.95
Free postage
Click & Collect
106 sold
Aquael Inline External Fish Tank Heater 300w 500w Thermostat Tropical Aquarium
Brand new
£54.95 to £61.95
Free postage
Click & Collect
300W/500W External Heater Thermostat For Aquarium Fish Tank Canister Filter UK
Brand new · Unbranded
£33.98
Free postage
Click & Collect
Fish Tank Heater, Submersible Aquarium Heater with External Temperature Contr...
Brand new
£26.38
Free postage
Click & Collect
Aquarium Heater Fish Tank Quartz Heating Rod With External Temperature Contr ZCC
Brand new · Unbranded
£20.40
or Best Offer
Free postage
Inline Aquarium Heater External Filter Thermostat Fish Tank Digital 300W 500W
Brand new · Unbranded
£33.98
Free postage
Click & Collect
300W/500W External Heater Thermostat For Aquarium Fish Tank Canister Filter UK
Brand new · Unbranded
£33.98
Free postage
Click & Collect
External Heater Thermostat For Aquarium Fish Tank Canister Filter 300W/500W UK
Brand new · Unbranded
£33.98
Free postage
Click & Collect
Aquael Flow Heater 300W - 500W Aquarium Fish Tank External Heater, Termostat
Brand new
£54.89
Free postage
Click & Collect
Fish Tank Heater, Submersible Aquarium Heater with External Temperature Contr...
Brand new
£28.99
Free postage
Click & Collect
300W/500W Aquarium Fish Tank Digital External Filter Heater Inline Thermostat
Brand new · Unbranded
£33.98
Free postage
Aquarium Heater Submersible For Fish Tank External Temp Control Led Temp Display
Brand new
£24.99
Free postage
Click & Collect
Aquarium Heater Fish Tank Quartz Heating Rod With External Temperature Contr UEE
Brand new · Unbranded
£20.40
or Best Offer
Free postage
Click & Collect
Aquael Flow Heater 300W - 500W Aquarium Fish Tank External Heater, Termostat @
Brand new
£53.99
Free postage
Click & Collect
Aquarium Heater Fish Tank Quartz Heating Rod With External Temperature Contr Ggm
Brand new · Unbranded
£20.51
or Best Offer
Free postage
Click & Collect
Aquael Flow Heater 300W - 500W Aquarium Fish Tank External Heater, Termostat
Brand new
£61.00
Free postage
Click & Collect
DONGKER Aquarium Heater, 100W Fish Tank Heater with External Controller (P992)
New (other)
£19.03
£2.99 P&P
Click & Collect
Aquarium Heater Small Tank Heater Used for Less Than 1 gallons External
Brand new · Unbranded
£10.98
Free postage
Aquarium Heater, 500w Fish Tank Heater with 59-93°F External Controller,...
Brand new
£39.99
Free postage
Click & Collect
Small Fish Tank Heater External Temperature Controller Aquarium Heater for Pet
Brand new · Unbranded
£9.90
Free postage
AQQA 100W Aquarium Heater,Submersible Fish Tank Heater with External Digital
Brand new
(1)
£22.11
Free postage
Click & Collect
(1200W)BROLEO Fish Tank External Heater Waterproof Professional Aquarium
Brand new · Unbranded
£98.28
(£98.28/kg)
or Best Offer
Free postage
500W Aquarium Fish Tank Digital External Filter Heater Inline Water Thermostat
Brand new · Unbranded
£35.29
Free postage
(1200W)Aquarium External Heating Rods UK Plug 220V Fish Tank External Heater
Brand new · Unbranded
£97.97
(£97.97/kg)
or Best Offer
Free postage
USB Small Fish Tank Heater External Temperature Controller Used for Less Than 1
Brand new · Unbranded
£10.98
Free postage
Small Fish Tank Heater for 1 Gallon LED Display External Temperature Controller
Brand new · Unbranded
£10.45 to £12.68
Free postage
outdoormarket USB Small Fish Tank Heater Heating Tool External Temperature
Brand new · Unbranded
£10.12 to £11.68
Free postage
Mini Fish Tank Heater LED USB Heating Rod External Temperature Controller
Brand new · Unbranded
£9.10
Free postage
USB Small Fish Tank Heater Mini Tank Heater External Temperature Controller
Brand new · Unbranded
£10.98
Free postage
Aquarium Heater for 1 Gallon External Temperature Controller Small Fish Tank
Brand new · Unbranded
£11.53 to £11.72
Free postage
Fish Tank External Heating Rods Automatic Thermostat Aquarium External ~
Brand new · Unbranded
£94.38
(£94.38/kg)
or Best Offer
Free postage
Fish Tank External Heating Rods AutoThermostat Aquarium External Heater 300W US✿
Brand new · Unbranded
£90.37
(£90.37/kg)
or Best Offer
Free postage
Mini Fish Tank Heater LED USB Heating Rod External Temperature Controller LED
Brand new · Unbranded
£8.96
Free postage
USB Small Fish Tank Heater External Temperature Controller Aquarium Heater for
Brand new · Unbranded
£10.98 to £11.12
Free postage
10W Fish Turtle Tank Heater Protection External Temperature
Brand new · Unbranded
£9.13
Free postage
10W Mini Fish Tank Heater for 5/10/20 gallons External Temperature Controller
Brand new · Unbranded
£9.43
Free postage
USB Small Fish Tank Heater Heating Tool External Temperature Controller
Brand new · Unbranded
£9.95 to £13.26
Free postage
10W Mini Fish Tank Heater External Temperature Controller with Built in
Brand new · Unbranded
£9.28
Free postage
300/500/800/1000/12000W Fish Tank External Heating Rods Aquarium Heater 20℃-34℃
Brand new · Unbranded
£49.81 to £89.90
Free postage
4 watching
USB Small Tank Heater Small Tank Heater External Temperature
Brand new · Unbranded
£10.70
Free postage
Small Submersible Aquarium Heater, Tank Heater 10W , External Temperature
Brand new · Unbranded
£9.43
Free postage
10W Fish Turtle Tank Heater Protection External Temperature Controller LED USB
Brand new · Unbranded
£8.99
Free postage
10W Mini Fish Tank Heater LED USB Heating Rod External Temperature Controller
Brand new · Unbranded
£10.90
Free postage
10W Fish Turtle Tank Heater Protection External Temperature Controller LED
Brand new · Unbranded
£8.82
Free postage
(1200W)Aquarium External Heating Rods Safety UK Plug 220V Fish Tank External
Brand new · Unbranded
£98.34
(£98.34/kg)
or Best Offer
Free postage
500W Fish Tank External Heating Rods Automatic Constant Temperature Aquarium Bgs
Brand new · Unbranded
£80.69
(£80.69/kg)
or Best Offer
Free postage
Fish Tank External Heating Rods Safe Waterproof LED Display Prevent NEW
Brand new · Unbranded
£88.50
(£88.50/kg)
or Best Offer
Free postage
LED Display Fish Tank External Heating Rods, Auto Constant Temp Aquarium Heater
Brand new · Unbranded
£49.27 to £87.02
Free postage
Fish Tank External Heating Rods Automatic Thermostat Aquarium External Heater 30
Brand new · Unbranded
£90.41
(£90.41/kg)
or Best Offer
Free postage
Fish Tank External Heating Rods Safe Waterproof LED Display Prevent HOT
Brand new · Unbranded
£92.68
(£92.68/kg)
or Best Offer
Free postage
USB Small Fish Tank Heater External Temperature Controller with Built in
Brand new · Unbranded
£10.98
Free postage
Fish Tank External Heating Rods Safe Waterproof LED Display Prevent ~
Brand new · Unbranded
£80.90
(£80.90/kg)
or Best Offer
Free postage

Best selling

See all

Fluval T Series Aquarium Heater 300w Fish Tank Accurate Thermostat 300 Litres
(2)
£27.99 New
biOrb 50W Watt Heater for Tropical Aquarium Fish Tank
(19)
£33.90 New
£31.92 Used
Fluval T100 100W Fully Electronic Aquarium Heater - 14881
(2)
£26.49 New
Fluval M50 Submersible 50W Premium Aquarium Heater - 50L Fish Tank (A781)
(11)
£19.99 New
£12.15 Used
SUPERFISH AQUARIUM HEATER 50w WATT TROPICAL FISH TANK SUBMERSIBLE THERMOSTAT
£14.95 New
Fluval T200 Fully Electronic Heater
(2)
£27.49 New
Interpet 51528 10W Nano Stat Submersible Heater for Aquariums
(14)
£12.99 New
£9.91 Used
Interpet Deltatherm Fish Tank Aquarium Heater 300w
(9)
£7.50 New

Top-rated

See all

Interpet 51528 10W Nano Stat Submersible Heater for Aquariums
(14)

100% agree - Would recommend
£12.99 New
£9.91 Used
Fluval M50 Submersible 50W Premium Aquarium Heater - 50L Fish Tank (A781)
(11)

87% agree - Would recommend
£19.99 New
£12.15 Used
Interpet Deltatherm Fish Tank Aquarium Heater 200w
(6)

100% agree - Would recommend
£9.00 New
biOrb 50W Watt Heater for Tropical Aquarium Fish Tank
(19)

100% agree - Would recommend
£33.90 New
£31.92 Used
Marina Aquarium Floating Glass Thermometer With Sucker A11201
(12)

91% agree - Would recommend
£3.75 New
Interpet Deltatherm Aquarium Heater - Fish - 100W - Up to 20 GAL - Working
(8)

100% agree - Would recommend
£16.50 New
£5.99 Used
Interpet Deltatherm Fish Tank Aquarium Heater 300w
(9)

85% agree - Would recommend
£7.50 New

Brand

External Fish Tank Heater

Shop by category

72 results

AQQA Aquarium Heater,50w Fish Tank Heater with 59-93°F External Controller…

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

In-Line External Aquarium Heater 150W 300W 500W Fish Tank Temperature Controller

OASE FILTOSMART THERMO 300 EXTERNAL AQUARIUM FILTER HEATER FISH TANK FILTRATION

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

Hydor ETH External Heater In-Line 300W 16mm Aquarium Fish Tank Temperature

100W Aquarium Heater,Submersible Fish Tank Heater with External Digital

Hydor ETH External Heater In-Line 300W 16mm Aquarium Fish Tank Temperature

Aquael Flow Inline Heater External Filter Thermostat Aquarium Fish Tank

Aquael Inline External Fish Tank Heater 300w 500w Thermostat Tropical Aquarium

300W/500W External Heater Thermostat For Aquarium Fish Tank Canister Filter UK

Fish Tank Heater, Submersible Aquarium Heater with External Temperature Contr...

Aquarium Heater Fish Tank Quartz Heating Rod With External Temperature Contr ZCC

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

300W/500W External Heater Thermostat For Aquarium Fish Tank Canister Filter UK

External Heater Thermostat For Aquarium Fish Tank Canister Filter 300W/500W UK

Aquael Flow Heater 300W - 500W Aquarium Fish Tank External Heater, Termostat

Fish Tank Heater, Submersible Aquarium Heater with External Temperature Contr...

300W/500W Aquarium Fish Tank Digital External Filter Heater Inline Thermostat

Aquarium Heater Submersible For Fish Tank External Temp Control Led Temp Display

Aquarium Heater Fish Tank Quartz Heating Rod With External Temperature Contr UEE

Aquael Flow Heater 300W - 500W Aquarium Fish Tank External Heater, Termostat @

Aquarium Heater Fish Tank Quartz Heating Rod With External Temperature Contr Ggm

Aquael Flow Heater 300W - 500W Aquarium Fish Tank External Heater, Termostat

DONGKER Aquarium Heater, 100W Fish Tank Heater with External Controller (P992)

Aquarium Heater Small Tank Heater Used for Less Than 1 gallons External

Aquarium Heater, 500w Fish Tank Heater with 59-93°F External Controller,...

Small Fish Tank Heater External Temperature Controller Aquarium Heater for Pet

AQQA 100W Aquarium Heater,Submersible Fish Tank Heater with External Digital

(1200W)BROLEO Fish Tank External Heater Waterproof Professional Aquarium

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

(1200W)Aquarium External Heating Rods UK Plug 220V Fish Tank External Heater

USB Small Fish Tank Heater External Temperature Controller Used for Less Than 1

Small Fish Tank Heater for 1 Gallon LED Display External Temperature Controller

outdoormarket USB Small Fish Tank Heater Heating Tool External Temperature

Mini Fish Tank Heater LED USB Heating Rod External Temperature Controller

USB Small Fish Tank Heater Mini Tank Heater External Temperature Controller

Aquarium Heater for 1 Gallon External Temperature Controller Small Fish Tank

Fish Tank External Heating Rods Automatic Thermostat Aquarium External ~

Fish Tank External Heating Rods AutoThermostat Aquarium External Heater 300W US✿

Mini Fish Tank Heater LED USB Heating Rod External Temperature Controller LED

USB Small Fish Tank Heater External Temperature Controller Aquarium Heater for

10W Fish Turtle Tank Heater Protection External Temperature

10W Mini Fish Tank Heater for 5/10/20 gallons External Temperature Controller

USB Small Fish Tank Heater Heating Tool External Temperature Controller

10W Mini Fish Tank Heater External Temperature Controller with Built in

300/500/800/1000/12000W Fish Tank External Heating Rods Aquarium Heater 20℃-34℃

USB Small Tank Heater Small Tank Heater External Temperature

Small Submersible Aquarium Heater, Tank Heater 10W , External Temperature

10W Fish Turtle Tank Heater Protection External Temperature Controller LED USB

10W Mini Fish Tank Heater LED USB Heating Rod External Temperature Controller

10W Fish Turtle Tank Heater Protection External Temperature Controller LED

(1200W)Aquarium External Heating Rods Safety UK Plug 220V Fish Tank External

500W Fish Tank External Heating Rods Automatic Constant Temperature Aquarium Bgs

Fish Tank External Heating Rods Safe Waterproof LED Display Prevent NEW

LED Display Fish Tank External Heating Rods, Auto Constant Temp Aquarium Heater

Fish Tank External Heating Rods Automatic Thermostat Aquarium External Heater 30

Fish Tank External Heating Rods Safe Waterproof LED Display Prevent HOT

USB Small Fish Tank Heater External Temperature Controller with Built in

Fish Tank External Heating Rods Safe Waterproof LED Display Prevent ~

Best selling

Fluval T Series Aquarium Heater 300w Fish Tank Accurate Thermostat 300 Litres

biOrb 50W Watt Heater for Tropical Aquarium Fish Tank

Fluval T100 100W Fully Electronic Aquarium Heater - 14881

Fluval M50 Submersible 50W Premium Aquarium Heater - 50L Fish Tank (A781)

SUPERFISH AQUARIUM HEATER 50w WATT TROPICAL FISH TANK SUBMERSIBLE THERMOSTAT

Fluval T200 Fully Electronic Heater

Interpet 51528 10W Nano Stat Submersible Heater for Aquariums

Interpet Deltatherm Fish Tank Aquarium Heater 300w

Top-rated

Interpet 51528 10W Nano Stat Submersible Heater for Aquariums

Fluval M50 Submersible 50W Premium Aquarium Heater - 50L Fish Tank (A781)

Interpet Deltatherm Fish Tank Aquarium Heater 200w

biOrb 50W Watt Heater for Tropical Aquarium Fish Tank

Marina Aquarium Floating Glass Thermometer With Sucker A11201

Interpet Deltatherm Aquarium Heater - Fish - 100W - Up to 20 GAL - Working

Interpet Deltatherm Fish Tank Aquarium Heater 300w