Fully Submersible, Fully Waterproof and UL Certified Heater suitable for both fresh and salt water aquarium set ups featuring TrueTemp technology
TruTemp dial with readjustment ring allows the user to calibrate the heater for ...
Cobalt Aquatics Accu-Therm 25 Watt Aquarium Heater
Fully submersible heater
Easy temperature setting
Computer tested, accurate ±2°F
Triac equipped thermostat
Borsilicate glass for superior heat and shock res...
Theo 100W For Aquariums 14–26 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 t...
All the titanium heating elements must be used with temperature controllers.
High quality titanium element
Excellent corrosion resistance
Double heating tube
Heavy duty grounded cable
Ideal for freshwater /...
The all new Cobalt Aquatics MINI-Therm compact and fully submersible heaters feature a constant ON design, specifically for small aquariums up to 4.8 gallons (18L).
The heater casing is made from a thermal-plastic polymer that ...