Cobalt Neo-Therm Heater


The all new Cobalt Aquatics NEO-Therm fully submersible electronic heaters feature a modern, super flat design with an easy to set “one touch” control system. The advanced electronic thermostat is accurate to ±0.5ºF and includes a LED that displays both the Set Temp and Tank Temp simultaneously and has a Set temperature range from 66ºFup to 96ºF. For ultimate safety and reliability, integrated thermal protection circuitry shut the heater down before it can overheat and its shatterproof outer casing make the NEO-therms virtually indestructible. Perfect for freshwater and saltwater aquariums and terrariums. Available in 25- 200watt sizes. The new twin 300 and 400 watt versions will be coming fall of 2015.

3 year warranty.


AQUARIUMS UP TO——-MODEL—–Dimensions” (l” x w” x thick at bezel”)

6 gal (22.7 l)—————–25 W———6 1/2″x 2 1/8″ x 4/5″

12 gal (45.4 l)—————-50 W———6 1/2″x 2 1/8″ x 4/5″

20 gal (75.7 l)—————-75 W———6 1/2″x 2 1/8″ x 4/5″

29 gal (109.8 l)————–100 W——–9 3/4″x 2 1/8″ x 4/5″

40 gal (151.4 l)————–150 W——–10 7/8″x 2 1/8″ x 4/5″

55 gal (208.2 l)—————200 W——–10 7/8″x 2 1/8″ x 4/5″

70 gal (265 l)—————–250 W——–Use 1-200W and 1-50W Neo’s

80 gal (302.8 l)————–300 W——–Use 1-200W and 1-100W Neo’s

125 gal (473.2 l)————-400 W——–Use 2-200W Neo’s

Correct heater postion- Vertical with heating element down, bezel, cord and button up.

Minimum water level- Top of the bezel.

-For 25, 50, 75watt 5.5″ from bottom of the heater.

-For 100 watt 8.75″ from bottom of the heater.

Maximum depth of 31.5″ deep at the bezel.


Download Manual Here


SPECIAL NOTE For use with Aquarium Controllers:

APEX users: Please be sure to plug your NEO-Therm into plug 4 or 8.

Digital Aquatics users: Neo-therms can be plugged into any port without issue.