Hydor USA

Hydor THEO Heater 400 Watt

$26.99  

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In stock in our East and West Coast warehouses

HD11502


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Theo 400W For Aquariums 80–105 gallons
New aquarium heater functioning with the exclusive PTC (Positive Thermal Coefficient) technology.


The Hydor Theo heater line features PTC patented thermal technology which makes it among the safest aquarium heater lines on the market. UL Listed by design, not by the use of accessories. Made from specially engineered shatterproof glass which, while not unbreakable, is designed to resist breakage in most normal aquarium situations. Highly accurate due to the use of precise micro-switch technology. For use in freshwater and marine aquariums. The 50W & 100W/150W models, at 7" & 8.9" respectively, are among the smallest sized heaters on the market. The Theo "minimum water line" requirement must be followed for proper operation.

Features:
  • The first shatter-proof heater thanks to the peculiar glass tube.
  • Maximum security: THEO is shock resistant thanks to the PTC heating element and the shatterproof glass tube.
  • Free positioning in aquarium with supplied suction cups.
  • Self-limiting: the patented PTC heating system guarantees operation in complete safety because in case of dry running there is no danger for damage.
  • Complete range: 3 new sizes 25W, 150W and the unique 400W.
  • 15.5" Length
  • Two year manufacturer`s warranty.

Product Manuals & Documentation

Hydor THEO Heater 400 Watt

Owner's Manual available for download in Adobe PDF file format

Manufacturer Info

Hydor has been producing a comprehensive range of equipment for aquariums and ponds since 1984 and offers the best in high-technology for the creation of a living ecosystem at home. The factory has developed thanks to the engineering competence of its founder and its continuous growth is based on the investment it has made in research and the development of innovative technical appliances. A competitive and dynamic structure of more than 150 employees regularly engages in the implementation of products which meet the demands of 50 nations and keep pace with the evolution of the world markets. The global quality is not a simple working method but a daily expression of mind.

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Q
Hi im looking for a heater that can heat about 25 gallons of water. But it somehow needs to be shielded as this is for a turtle tank, the last glass one she broke. I need water to be at 80 to 85 degrees
Asked : May 31, 2019
By : Ashia, Pennsylvania
 
 
 
A
This heater would be overpowered for a 25 gallon tank.
Answered : Aug 02, 2019
By : MD TECH
 
Q
Shipping Wight please?
Asked : Feb 12, 2018
By : hassaan
 
 
 
A
Shipping weight will be around 2.00lbs.
Answered : May 29, 2018
By : Jared
 
 

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We are unable to accept returns of Digital Aquatics, Neptune Systems, Vertex Aquaristik, Aqua Illumination (AI), EcoTech Marine, GHL, or Seneye products once the manufacturer's packaging seals have been broken.

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