Heating

A thermostatically controlled water heater will help to maintain a regular water
temperature in the aquarium. This is especially good in areas that get very hot during the
day and cool off during the nights. The more wattage your heater has, the more heat it
will generate. Larger aquariums need more heat than smaller ones as there is more water
to heat. An immersible heater hangs into the water while the thermostat remains above
water. This makes it easier to take readings. Fully submersible heaters are fixed to the
back wall of the aquarium. In this case, one has to be very careful while taking the
readings. Carelessness can cause the glass of the heater to crack or even explode.
Even in places where the temperature is relatively stable, the use of a heater is still
recommended, and required if you keep tropical fish. Only fish that do well in cold water
like goldfish should be kept in aquariums without heaters. The heater will help you to
control the temperature in which the fish live. Even the hardiest of fishes cannot tolerate
steep fluctuations in water temperature and will eventually die if they are submitted to
such changes. It is therefore essential to have a thermometer that will read the
temperature in the aquarium at all times and a heater that will heat the water when
necessary. The crystal typ