Heater must always be
located in an area with strong circulation of water. If water movement
is insufficient, the thermostat will not function accurately, and
desired temperature will not be obtained throughout aquarium. You should
be able to obsenve that when heating (lamp on), the warm water is
circulated away from heater before rising to the zone of the thermometer
scale.
Choice of correct wattage is important.Use the table to
find the correct wattage depending on the size of aquarium, and the
difference between room temperature and the desired aquarium
temperature.
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