Hydor Theo Heater – Submersible Aquarium Heater
The Hydor Aquarium Heater is a submersible heater made with the exclusive PTC (Positive Thermal Coefficient) technology. This Hydor aquarium heater provides no thermal shock, is submersible, and engineered shatterproof glass designed to resist breakage in most normal aquarium situations.
- Ideal for Freshwater or Saltwater Aquariums
- Heater can be positioned vertical or horizontal
- The Hydor heater cord is approximately 6 feet long
The Hydor Aquarium Heater has all the necessary features for safe and precise temperature maintenance of water in your tank. The exclusive technology and the high quality of the components guarantee a long lasting product.
25 Watt: 2-7 Gallons (6.9″ Long)
300 Watt: 53-80 Gallons (15.5″ Long)
400 Watt: 80-105 Gallons (15.5″ Long)