Hydor Aquarium Heater

9 reviews
This Hydor Aquarium Heater is durable and reliable, meaning you can trust it to ensure your tropical aquarium is heated to the perfect temperature to encourage the aquatic life inside it to thrive.


  • Aquarium Heater 25w
    code: T11704 In stock Only 1 left in stock
  • Aquarium Heater 50w Sale
    code: T11104 In stock Only 5 left in stock
  • Aquarium Heater 100w Sale
    code: T11204 In stock Only 5 left in stock
  • Aquarium Heater 150w Sale
    code: T11604 In stock Only 3 left in stock
  • Aquarium Heater 200w Sale
    code: T11304 In stock Only 4 left in stock

Product Information

The Hydor Aquarium Heater (formerly the Hydor Theo Heater) is the perfect heater for your tropical tank.

Packed with safe, intelligent features that not only ensure your fish are not only in the right climate, but that they are safe too!

The heater is shock resistant and shatter proof so it can withstand long use and any tough treatment in the tank. It can be placed either vertically or horizontally for optimum use, and of course it can be completely submerged too.

The patented PTC heating system guarantees operation in complete security which avoids the risk of dry running. 

Suitable for use in marine, tropical or amphibian tanks, and is great for larger fish and turtles.

Key Features:

  • Graduate Scale: Precise maintenance of set temperature.
  • Free Positioning: Can be placed vertical, horizontal and completely submerged
  • Shock resistant, thanks to the PTC heating element and shatter-proof glass tube
  • Universal Heater - Suitable for Marine and Tropical Aquariums
  • Two Year Guarantee

Product Specification

Product Size Guarantee Wattage Tank Size
Hydor Aquarium Heater 25w 7 2 Year 25w 10 - 25ltr
Hydor Aquarium Heater 50w 7 2 Year 50w 20 - 50ltr
Hydor Aquarium Heater 100w 9 2 Year 100w 60 - 100ltr
Hydor Aquarium Heater 150w 12 2 Year 150w 90 - 150ltr
Hydor Aquarium Heater 200w 12 2 Year 200w 100 - 200ltr

Latest Customer Reviews