The adjustable heater helps to prevent the risk of overheating.
Adjustable heater for small fish tank.
All you have to do is set a temperature between 67 91 f.
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It can be easily fit in the small fish tank.
Hydor submersible glass aquarium heater is not difficult to use.
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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 hydor theo is an adjustable aquarium heater.
The device shuts off automatically after reaching this level.
25watt is appropriate for small aquariums.
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For instance you set the temperature of 78 f.
The wire of the heater is long enough.