Hydor submersible glass aquarium heater is not difficult to use.
Adjustable heater for small fish tank.
Unlike the preset heater an adjustable heater can automatically regulate the temperature thanks to a thermostat.
There are different sizes of heaters for different sized aquariums.
The wire of the heater is long enough.
25watt is appropriate for small aquariums.
All you have to do is set a temperature between 67 91 f.
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The device shuts off automatically after reaching this level.
The adjustable heater helps to prevent the risk of overheating.
Most importantly it s the smallest adjustable heater on the market.
The hydor theo is an adjustable aquarium heater.
For instance you set the temperature of 78 f.
And it will turn on when water tends to cool down.