Aquarium Heater Submersible Fish Tank Thermostat w/ Adjust Knob 2pcs 5-150 gal

Description

Fully submersible heaters work in any position (horizontal or vertical) to provide optimum aquarium water temperature.
Temperature range between 65°F and 89°F.
（500W： 65°F - 93°F）
Sensitive and reliable thermostat maintains uniform temperature.
Automatically shut off when the temperature is reached.
Shatterproof glass
SPECIFICATION:
Power
Length
Recommended Tank Size
25W
7.25
5 to 8 gallon
50W
7.25"
10 to 16 gallon
200W
12.5"
40 to 66 gallon
300W
13.75"
60 to 100 gallon
500W
17.625"
100 to 166 gallon
Voltage: 110-120V 60Hz
Diameter: 0.85 inch
Length of power cord: 2.9 feet
INCLUDES:
2 heaters
Tips for Selecting and Using Aquarium Heaters:
A minimum of 3-5 watts per gallon is recommended in keeping your aquarium at optimal temperature level. The use of multiple heaters in larger aquariums can allow even heat distribution.
The heater should always operate under water.
Please cut off the power and wait for at least 10 minutes before changing water, touching the heater or taking the heater out of water.
Please don't use in the water if the wire or glass tube was damaged