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