The temperature of your aquarium is an important factor in the comfort and well being of your fish. Unlike humans and warm-blooded animals, fish do not produce their own body heat. They must rely on the temperature of the water to maintain their body temperature. This aquarium heater guide covers everything you need to know about heaters, from types to sizes to placement.
Heater Types
You've done your research and determined your fish need heated water. Now the question is what heater type do you need? There are several varieties available. Here are facts about different types of heaters.
Heater Size Guide
Not sure what size heater to get for your aquarium? This heater size guide will help you select a heater that is the right match for your aquarium.
Heater Placement
You have a heater, but where to you put it? In the middle, on the side, front or back? Does it even matter? There are some simple, but important, guidelines for proper heater placement.




