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Aquarium heater 300w

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Hidom submersible tropical - hidom,

Hidom submersible tropical - hidom,

£13.95 · Buy It Now

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Hidom proheat quartz - quartz, aquarium

Hidom proheat quartz - quartz, aquarium

£16.45 · Buy It Now

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Hidom proheat quartz aquarium - proheat,

Hidom proheat quartz aquarium - proheat,

£16.45 · Buy It Now

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300w aquarium fish - fish, tank

300w aquarium fish - fish, tank

£13.49 · Buy It Now

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300w aquarium heater - aquarium, tank

300w aquarium heater - aquarium, tank

£9.95 · Buy It Now

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Fluval aquarium heater - t,

Fluval aquarium heater - t,

£26.99 · Buy It Now

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Hidom aquarium heater - aquarium,

Hidom aquarium heater - aquarium,

£9.65 · Buy It Now

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Hepo submersible aquarium - hepo, fish

Hepo submersible aquarium - hepo, fish

£9.99 · Buy It Now

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Hidom submersible tropical - submersible,

Hidom submersible tropical - submersible,

£13.95 · Buy It Now

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Interpet deltatherm - interpet, eu

Interpet deltatherm - interpet, eu

£10.95 · Buy It Now

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Eheim thermocontrol heater - eheim,

Eheim thermocontrol heater - eheim,

£29.99 · Buy It Now

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Aquarium heater submersible - heater,

Aquarium heater submersible - heater,

£16.45 · Buy It Now

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Fluval series aquarium - fluval,

Fluval series aquarium - fluval,

£26.99 · Buy It Now

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External heater thermostat - external,

External heater thermostat - external,

£32.99 · Buy It Now

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Fluval heater thermostat lcd - fluval,

Fluval heater thermostat lcd - fluval,

£49.99 · Buy It Now

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Submersible aquarium tropical - submersible,

Submersible aquarium tropical - submersible,

£24.99 · Buy It Now

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Fish fun heater thermostat - fun,

Fish fun heater thermostat - fun,

£13.99 · Buy It Now

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Aquarium fish tank - fish, heater

Aquarium fish tank - fish, heater

£5.99 · Buy It Now

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Hepo bundle aquarium - bundle,

Hepo bundle aquarium - bundle,

£9.99 · Buy It Now

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Led digital aquarium - led,

Led digital aquarium - led,

£20.64 · Buy It Now

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Submersible aquarium heater - submersible,

Submersible aquarium heater - submersible,

£13.45 · Buy It Now

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Interpet deltatherm aquarium - interpet,

Interpet deltatherm aquarium - interpet,

£1.95 · Buy It Now

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Stainless steel aquarium - steel,

Stainless steel aquarium - steel,

£13.99 · Buy It Now

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Juwel aquarium heater 100w - aquarium,

Juwel aquarium heater 100w - aquarium,

£28.53 · Buy It Now

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Marina aquarium heater - marina, 25w

Marina aquarium heater - marina, 25w

£17.60 · Buy It Now

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Hidom quartz submersible - quartz,

Hidom quartz submersible - quartz,

£16.45 · Buy It Now

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Aquarium submersible heater - submersible,

Aquarium submersible heater - submersible,

£23.85 · Buy It Now

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

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

£31.90 · Buy It Now

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Hidom stainless steel aquarium - hidom,

Hidom stainless steel aquarium - hidom,

£14.95 · Buy It Now

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Jbl protemp 300w 500w - protemp, e

Jbl protemp 300w 500w - protemp, e

£41.67 · Buy It Now

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Superfish pro aquarium - pro, heater

Superfish pro aquarium - pro, heater

£15.95 · Buy It Now

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Aquarium fish tank submersible - tank,

Aquarium fish tank submersible - tank,

£7.99 · Buy It Now

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Kit submersible aquarium - submersible,

Kit submersible aquarium - submersible,

£9.12 · Buy It Now

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Fluval series aquarium - fluval, t

Fluval series aquarium - fluval, t

£26.99 · Buy It Now

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

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

£20.94 · Buy It Now

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Superfish aquarium heater - superfish,

Superfish aquarium heater - superfish,

£15.49 · Buy It Now

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Eheim jager aquarium fish - jager, tank

Eheim jager aquarium fish - jager, tank

£31.49 · Buy It Now

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Fluval m300 300w aquarium - 300w,

Fluval m300 300w aquarium - 300w,

£29.82 · Buy It Now

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Submersible aquarium heater - aquarium,

Submersible aquarium heater - aquarium,

£12.46 · Buy It Now

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Submersible aquarium heater - submersible,

Submersible aquarium heater - submersible,

£15.05 · Buy It Now

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300w 500w inline aquarium - inline,

300w 500w inline aquarium - inline,

£32.34 · Buy It Now

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Submersible aquarium heater - submersible,

Submersible aquarium heater - submersible,

£10.75 · Buy It Now

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Fish tank heater 300w - 300w, hidom

Fish tank heater 300w - 300w, hidom

£13.95 · Buy It Now

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25w 300w submersible - to,

25w 300w submersible - to,

£8.01 · Buy It Now

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Interpet deltatherm aquarium - deltatherm,

Interpet deltatherm aquarium - deltatherm,

£18.90 · Buy It Now

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25w 300w submersible - submersible, aquarium

25w 300w submersible - submersible, aquarium

£8.09 · Buy It Now

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Aquarium marine fish tank - marine,

Aquarium marine fish tank - marine,

£9.58 · Buy It Now

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50w 100w aquarium marine fish - aquarium,

50w 100w aquarium marine fish - aquarium,

£9.82 · Buy It Now

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Oase heat aquarium fish - up,

Oase heat aquarium fish - up,

£29.75 · Buy It Now

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Hitop 608 submersible - hitop, hp-608

Hitop 608 submersible - hitop, hp-608

£9.73 · Buy It Now

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Juwel aqua heat - heat, aquarium

Juwel aqua heat - heat, aquarium

£33.99 · Buy It Now

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Aquarium heater submersible - aquarium,

Aquarium heater submersible - aquarium,

£10.95 · Buy It Now

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Aquarium heater rod - aquarium, tank

Aquarium heater rod - aquarium, tank

£8.30 · Buy It Now

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Hagen marina submersible - hagen,

Hagen marina submersible - hagen,

£14.95 · Buy It Now

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Aquarium fish tank - aquarium,

Aquarium fish tank - aquarium,

£5.99 · Buy It Now

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Submersible aquarium heater - submersible,

Submersible aquarium heater - submersible,

£10.94 · Buy It Now

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

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

£15.89 · Buy It Now

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

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

£17.92 · Buy It Now

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Aquarium heater 300w - heater, tank

Aquarium heater 300w - heater, tank

£12.93 · Buy It Now

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Juwel aqua heat pro aquarium - aqua,

Juwel aqua heat pro aquarium - aqua,

£31.95 · Buy It Now

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Eheim thermocontrol heater - eheim,

Eheim thermocontrol heater - eheim,

£41.75 · Buy It Now

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Fluval heater 50w 100w - fluval,

Fluval heater 50w 100w - fluval,

£45.99 · Buy It Now

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Hidom submersible aquarium - hidom,

Hidom submersible aquarium - hidom,

£11.45 · Buy It Now

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Hidom aquarium heater - hidom,

Hidom aquarium heater - hidom,

£10.95 · Buy It Now

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Juwel automatic heater - juwel,

Juwel automatic heater - juwel,

£34.05 · Buy It Now

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Aquarium glass heater - aquarium,

Aquarium glass heater - aquarium,

£18.99 · Buy It Now

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Betta thermal compact heater - compact,

Betta thermal compact heater - compact,

£13.99 · Buy It Now

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Best seller submersible - uk,

Best seller submersible - uk,

£10.52 · Buy It Now

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Interpet deltatherm aquarium - interpet,

Interpet deltatherm aquarium - interpet,

£22.95 · Buy It Now

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Fluval t300 aquarium - aquarium, heater

Fluval t300 aquarium - aquarium, heater

£28.95 · Buy It Now

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100w aquarium marine fish - aquarium,

100w aquarium marine fish - aquarium,

£10.20 · Buy It Now

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Aquarium heater fish tank - heater,

Aquarium heater fish tank - heater,

£9.99 · Buy It Now

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100 200 300w aquarium - aquarium, fish

100 200 300w aquarium - aquarium, fish

£10.58 · Buy It Now

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Eheim thermocontrol heater - eheim,

Eheim thermocontrol heater - eheim,

£29.88 · Buy It Now

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Aquarium heater hidom - aquarium,

Aquarium heater hidom - aquarium,

£11.43 · Buy It Now

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Aquarium marine fish tank - aquarium,

Aquarium marine fish tank - aquarium,

£9.60 · Buy It Now

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New submersible aquarium eco - aquarium,

New submersible aquarium eco - aquarium,

£9.86 · Buy It Now

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Submersible aquarium fish tank - aquarium,

Submersible aquarium fish tank - aquarium,

£14.95 · Buy It Now

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Betta compact aquarium - compact,

Betta compact aquarium - compact,

£15.75 · Buy It Now

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Eheim thermocontrol heater - thermocontrol,

Eheim thermocontrol heater - thermocontrol,

£29.99 · Buy It Now

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Fluval heater thermostat lcd - heater,

Fluval heater thermostat lcd - heater,

£47.99 · Buy It Now

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Fluval series aquarium - e-series,

Fluval series aquarium - e-series,

£44.89 · Buy It Now

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Aquael inline external fish - inline,

Aquael inline external fish - inline,

£54.95 · Buy It Now

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Sicce scuba contactless heater - scuba,

Sicce scuba contactless heater - scuba,

£44.99 · Buy It Now

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Hygger fish tank heater - fish, 300w

Hygger fish tank heater - fish, 300w

£49.60 · Buy It Now

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Juwel 200w aquarium heater - juwel,

Juwel 200w aquarium heater - juwel,

£30.50 · Buy It Now

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Titanium heater elitech - titanium,

Titanium heater elitech - titanium,

£61.99 · Buy It Now

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Eheim thermocontrol aquarium - thermocontrol,

Eheim thermocontrol aquarium - thermocontrol,

£29.99 · Buy It Now

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Hygger fish tank heater - tank, heater,

Hygger fish tank heater - tank, heater,

£41.52 · Buy It Now

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Aquael aquarium platinium - aquarium,

Aquael aquarium platinium - aquarium,

£28.38 · Buy It Now

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Aquael flow inline heater - inline,

Aquael flow inline heater - inline,

£56.95 · Buy It Now

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Superfish pro heater tropical - superfish,

Superfish pro heater tropical - superfish,

£15.85 · Buy It Now

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Aquarium heater fish tank - aquarium,

Aquarium heater fish tank - aquarium,

£10.86 · Buy It Now

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Interpet deltatherm 300w - interpet,

Interpet deltatherm 300w - interpet,

£20.99 · Buy It Now

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Submersible aquarium heater - aquarium,

Submersible aquarium heater - aquarium,

£12.14 · Buy It Now

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Submersible aquarium heater - submersible,

Submersible aquarium heater - submersible,

£12.99 · Buy It Now

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📊96 listings · from £1.95 · avg £21.19

Browse 96 aquarium heater 300w listings currently in our index. Prices range from £1.95 to £61.99, with an average of £21.19. 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 £61.99 — giving you a wide budget spread to work with. The average price of £21.19 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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