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Aquarium heater 300w

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Hidom submersible tropical - hidom,

Hidom submersible tropical - hidom,

£13.95
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Hidom proheat quartz - proheat, aquarium

Hidom proheat quartz - proheat, aquarium

£16.45
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Submersible aquarium tropical - submersible,

Submersible aquarium tropical - submersible,

£24.99
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Hidom aquarium heater - hidom,

Hidom aquarium heater - hidom,

£9.65
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Fluval aquarium heater - fluval,

Fluval aquarium heater - fluval,

£26.99
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Stainless steel aquarium - stainless,

Stainless steel aquarium - stainless,

£11.89
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Interpet deltatherm - eu,

Interpet deltatherm - eu,

£10.95
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Hidom submersible tropical - hidom,

Hidom submersible tropical - hidom,

£13.95
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200 300 500w led digital - 200/300/500w,

200 300 500w led digital - 200/300/500w,

£17.27
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Superfish aquarium heater - superfish,

Superfish aquarium heater - superfish,

£15.49
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Hidom aquarium heater - aquarium,

Hidom aquarium heater - aquarium,

£11.95
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Eheim thermocontrol heater - eheim,

Eheim thermocontrol heater - eheim,

£29.99
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New submersible aquarium - new,

New submersible aquarium - new,

£9.86
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Hidom proheat quartz aquarium - hidom,

Hidom proheat quartz aquarium - hidom,

£16.45
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50w 500w led digital aquarium - 50w-500w,

50w 500w led digital aquarium - 50w-500w,

£20.66
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Jbl protemp 300w - protemp, e

Jbl protemp 300w - protemp, e

£41.67
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Hepo submersible aquarium fish - hepo,

Hepo submersible aquarium fish - hepo,

£9.99
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External heater thermostat for - thermostat,

External heater thermostat for - thermostat,

£32.99
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Interpet deltatherm aquarium - deltatherm,

Interpet deltatherm aquarium - deltatherm,

£1.95
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Juwel automatic heater - automatic,

Juwel automatic heater - automatic,

£32.35
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Fluval series aquarium - t,

Fluval series aquarium - t,

£26.99
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300w aquarium fish tank heater - aquarium,

300w aquarium fish tank heater - aquarium,

£13.49
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Submersible aquarium eco - uk,

Submersible aquarium eco - uk,

£9.86
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Fish fun heater thermostat - fish,

Fish fun heater thermostat - fish,

£13.99
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Submersible aquarium heater - aquarium,

Submersible aquarium heater - aquarium,

£13.45
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Submersible aquarium heater - aquarium,

Submersible aquarium heater - aquarium,

£11.04
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Hepo bundle aquarium heater - aquarium,

Hepo bundle aquarium heater - aquarium,

£9.99
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100 200 300w aquarium - aquarium, fish

100 200 300w aquarium - aquarium, fish

£10.58
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Hidom quartz submersible - quartz,

Hidom quartz submersible - quartz,

£16.45
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Aquarium fish tank submersible - aquarium,

Aquarium fish tank submersible - aquarium,

£6.99
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Submersible aquarium heater - submersible,

Submersible aquarium heater - submersible,

£21.92
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Hidom stainless steel aquarium - stainless,

Hidom stainless steel aquarium - stainless,

£14.95
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Aquarium fish tank - tank, heater

Aquarium fish tank - tank, heater

£5.99
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Hydor eth 300w line - 300w, in-line

Hydor eth 300w line - 300w, in-line

£31.90
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Fluval t300 submersible - fluval,

Fluval t300 submersible - fluval,

£26.69
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300w fish tank heater small - 300w,

300w fish tank heater small - 300w,

£24.62
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200 300 500w - 200/300/500w, led

200 300 500w - 200/300/500w, led

£20.94
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Aquael flow inline heater - flow,

Aquael flow inline heater - flow,

£56.95
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Aquarium glass heater aqua - glass,

Aquarium glass heater aqua - glass,

£18.99
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Submersible aquarium fish - submersible,

Submersible aquarium fish - submersible,

£14.95
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Aquarium fish tank - fish, heater

Aquarium fish tank - fish, heater

£5.69
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Juwel aqua heat - juwel,

Juwel aqua heat - juwel,

£31.99
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200 300 500w led digital - 200/300/500w,

200 300 500w led digital - 200/300/500w,

£19.93
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300w aquarium heater - aquarium,

300w aquarium heater - aquarium,

£22.99
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Hitop 608 submersible - hitop,

Hitop 608 submersible - hitop,

£9.73
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Interpet deltatherm aquarium - interpet,

Interpet deltatherm aquarium - interpet,

£17.74
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25w 300w submersible aquarium - 25w-300w,

25w 300w submersible aquarium - 25w-300w,

£7.99
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Oase heat aquarium fish - oase,

Oase heat aquarium fish - oase,

£29.75
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300w stainless steel aquarium - steel,

300w stainless steel aquarium - steel,

£11.89
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Aqua one aquarium - aqua,

Aqua one aquarium - aqua,

£16.99
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Aquarium fish tank - fish,

Aquarium fish tank - fish,

£6.47
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Juwel aquarium heater 100w - aquarium,

Juwel aquarium heater 100w - aquarium,

£28.53
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Interpet nano stat aquarium - interpet,

Interpet nano stat aquarium - interpet,

£1.95
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Betta thermal compact - compact, heater

Betta thermal compact - compact, heater

£12.99
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Marina aquarium heater 25w - heater, 50w

Marina aquarium heater 25w - heater, 50w

£18.85
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Eheim thermocontrol aquarium - eheim,

Eheim thermocontrol aquarium - eheim,

£24.19
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Juwel 200w aquarium heater - juwel,

Juwel 200w aquarium heater - juwel,

£30.50
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Superfish pro heater 300w - pro, 50-300w

Superfish pro heater 300w - pro, 50-300w

£15.89
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Best seller submersible - seller,

Best seller submersible - seller,

£10.52
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Hepo submersible aquarium fish - hepo,

Hepo submersible aquarium fish - hepo,

£6.31
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Fish fun 300w - fun,

Fish fun 300w - fun,

£8.12
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Fluval heater thermostat lcd - fluval,

Fluval heater thermostat lcd - fluval,

£47.99
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Plug aquarium submersible - uk,

Plug aquarium submersible - uk,

£10.44
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Fluval series aquarium - fluval,

Fluval series aquarium - fluval,

£28.99
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Fluval t300 aquarium heater - fluval,

Fluval t300 aquarium heater - fluval,

£28.95
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Juwel aqua heat pro - aqua,

Juwel aqua heat pro - aqua,

£31.95
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Interpet deltatherm aquarium - interpet,

Interpet deltatherm aquarium - interpet,

£24.75
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Aquarium heater hidom - heater,

Aquarium heater hidom - heater,

£11.43
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Kit submersible aquarium eco - kit,

Kit submersible aquarium eco - kit,

£9.12
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Aquarium 50w 500w digital - 50w, to

Aquarium 50w 500w digital - 50w, to

£19.31
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Fluval heater thermostat lcd - e,

Fluval heater thermostat lcd - e,

£49.99
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300w 500w inline aquarium - 300w/500w,

300w 500w inline aquarium - 300w/500w,

£32.34
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Superfish pro heater tropical - superfish,

Superfish pro heater tropical - superfish,

£15.85
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Aquarium heater submersible - aquarium,

Aquarium heater submersible - aquarium,

£16.45
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Aquael inline external fish - inline,

Aquael inline external fish - inline,

£54.95
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300w fish tank - fish, small

300w fish tank - fish, small

£19.39
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Submersible aquarium heater - aquarium,

Submersible aquarium heater - aquarium,

£12.70
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200 300 500w - 200/300/500w, digital

200 300 500w - 200/300/500w, digital

£18.07
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Aquarium heater submersible - aquarium,

Aquarium heater submersible - aquarium,

£10.95
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300w fish tank aquarium - fish, heater

300w fish tank aquarium - fish, heater

£13.95
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Eheim jager aquarium fish - aquarium, tank

Eheim jager aquarium fish - aquarium, tank

£31.49
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Aquarium 50w 500w digital - to,

Aquarium 50w 500w digital - to,

£19.99
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Submersible aquarium heater - submersible,

Submersible aquarium heater - submersible,

£10.75
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200 300 500w led digital - led,

200 300 500w led digital - led,

£17.46
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300w fish tank heater - tank, heater,

300w fish tank heater - tank, heater,

£19.45
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Hidom submersible aquarium - hidom,

Hidom submersible aquarium - hidom,

£11.45
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Aquarium heater 300w tropical - heater,

Aquarium heater 300w tropical - heater,

£9.73
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Fluval series electronic - series,

Fluval series electronic - series,

£26.89
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300w fish tank heater - fish, small

300w fish tank heater - fish, small

£17.39
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Superfish aquarium heater - superfish,

Superfish aquarium heater - superfish,

£7.99
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Submersible aquarium heater - submersible,

Submersible aquarium heater - submersible,

£19.88
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50w 500w led digital - led,

50w 500w led digital - led,

£17.29
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Eheim thermocontrol heater - eheim,

Eheim thermocontrol heater - eheim,

£29.88
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300w fish tank heater small - 300w,

300w fish tank heater small - 300w,

£19.45
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Aquarium fish tank - tank, heater

Aquarium fish tank - tank, heater

£18.00
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Tropical aquarium fish tank - aquarium,

Tropical aquarium fish tank - aquarium,

£19.45
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📊96 listings · from £1.95 · avg £19.1
⚠️ These listings were last updated more than 17 days ago. Search for fresh listings

Browse 96 aquarium heater 300w listings currently in our index. Prices range from £1.95 to £56.95, with an average of £19.1. Whether you are hunting for a bargain or looking for a top-spec model, the selection below covers all price points — new, used and refurbished. More about aquarium heater 300w →

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Everything you need to know about aquarium heater 300w

Whether you are looking for a brand-new or second-hand aquarium heater 300w, eBay offers one of the largest selections available online. With 96 active listings at the time of this page's last update, you have plenty of choice across different conditions, sellers and price points. The cheapest option currently starts at £1.95, while premium listings can reach £56.95 — giving you a wide budget spread to work with. The average price of £19.1 can serve as a useful benchmark: listings below this tend to be used or auction-style, while those above often include extra accessories, warranties, or are sold by professional sellers with high feedback scores. Always check the seller's feedback rating and return policy before committing to a purchase. If you need the item quickly, filter by "Buy It Now" to avoid the uncertainty of auctions. For used items, look closely at the condition description and photos — terms like "good", "very good" and "like new" can mean very different things depending on the seller.

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