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Thermostatic Heaters

Quality internal Aquarium Heaters

Thermostatic Heaters are used underwater in the aquarium, the thermostat switches the heater on and off as required to maintain the correct temperature for the fish being kept. We stock only the brand leaders because of their testing and accuracy. Deltatherm, Elite, Tronic, Tetratec, Juwel and Visitherm heaters are all in this section.

There are 10 products in Thermostatic Heaters.


Fluval E Series Electronic Aquarium Heater

Fluval E Series Electronic Aquarium Heater

The Fluval E Series are one of the most technically advanced submersible aquarium heaters available, the VueTech LCD display delivers peace of mind by continuosly showing the real time water temper...

RRP: £37.59

Seapets price

From £31.35

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Fluval M Series Mirrored Aquarium Heater

Fluval M Series Mirrored Aquarium Heater

The M Series heaters from Fluval are premium aquarium heaters manufactured in Europe using superior components and construction. They can be trusted to offer superior, reliable performance. The mi...

RRP: £27.39

Seapets price

From £20.75

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Elite Pre-Set Heater Thermostat

Elite Pre-Set Heater Thermostat

Fully submersible in fresh or salt water, these heaters are magnetically-equipped to prevent arcing and element burn-out. They feature an easy-to-read adjustable dial and a unique suction bracket ...

RRP: £21.09

Seapets price

From £16.75

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Deltatherm Aquarium Heater Thermostat Interpet

Deltatherm Aquarium Heater Thermostat Interpet

Excellent value, quality product with a two year guarantee. Tropical aquarium heating system. Features easy, clear temperature adjustment and an efficient nichrome element for longer life and even...

RRP: £27.19

Seapets price

From £18.20

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Rena Smart Heater

Rena Smart Heater

The revolutionary Smart Heater from Rena sets a new standard in temperature control and accuracy. It is fully submersible and works in any position by drawing the aquarium water up through its c...

RRP: £26.99

Seapets price

From £22.50

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Tetratec Thermostatic Heater

Tetratec Thermostatic Heater

TetraTec heaters are both highly accurate and reliable, whilst also being easy to adjust and use. The temperature regulator is accurate to within 0.25°C, with a scale that is easy to set and read e...

RRP: £26.59

Seapets price

From £17.95

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Juwel Heater

Juwel Heater

The JUWEL Aquarium Heater is designed to fit perfectly inside the filter system freeing up space in the aquarium and keeping it safe from your fish. It is supplied with the heater holder necessary ...

Seapets price

£29.50

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Visitherm Heater

Visitherm Heater

Visitherm heaterstat are extensively recognised as the most accurate and the most reliable heaterstat available. Voted independently by the readers of Practical Fishkeeping in their last two reader...

RRP: £29.25

Seapets price

From £20.45

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Marina Submersible Aquarium Heater 17w

Marina Submersible Aquarium Heater 17w

The Marina Submersible Aquarium Heater has a LED running lamp, a red pilot light is illuminated when the heater is in operation. It is shatterproof with a tough unbreakable polymer casing and is ea...

RRP: £19.69

Seapets price

£14.79

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Marina Submersible Aquarium Heater 25w

Marina Submersible Aquarium Heater 25w

The Marina Submersible Aquarium Heater has a LED running lamp, a red pilot light is illuminated when the heater is in operation. It is shatterproof with a tough unbreakable polymer casing and is ea...

RRP: £20.79

Seapets price

£15.60

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We offer only the brand leading products because of their strict testing, accuracy, compliance with the electrical certificate regulations and ongoing manufacturers support. We still offer these products at great prices though!

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Fluval G Power Filters

Fluval G Power Filters

SAVE £50 OFFER

The amazing advanced external power filter - The Fluval G now available with £50 off either model on our coupon offer, simply add the code, GOFFER50 into our coupon box and save £50 off our normal selling price.

Fluval G Power Filters

Fluval Aquarium

Fluval Profile Aquarium

Coming very soon, the stunning Fluval Profile Aquariums in Stainless Steel or in Black. This aquarium will be available in the two models, both in two sizes 100 cm and 120 cm long.

Fluval Profile Aquariums

Juwel AutoFeeder

The Juwel Automatic Feeder, designed to fit all Juwel aquariums, Buy now at our summer holiday special offer, at only £14.99 (RRP £23.99)

Juwel Feeder

Juwel Aquarium Lighting

High-Lite Logo

High Lite Tubes

Juwel aquariums supplied by us all have the latest Juwel Lamps fitted. Plus we stock the range of Juwel replacement tubes and Juwel accessories.

Juwel Aquariums

Fluval Filters

Fluval U Series Filters Practical Fishkeeping Winner 'Freshwater Product of the Year 2009'

Always available at great prices from Seapets

Fluval U Series Filters

Rena Smart Heater

Rena Smart Heater

Revolutionary new design of aquarium heater now available. Unbreakable, totally safe and absolutely accurate. Offered at an introductory discount price.

Rena Smart Heater

Aquarium Fluorescent Tubes

Aquarium Tubes

We offer fluorescent tubes from Arcadia, Arcadia-Classica, Juwel High-Lite, Marina and Interpet, all designed to enhance the impact and appearance of your aquarium.

Fluorescent Tubes

Buying and advice guide

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