Many fish passionate ask themselves why they need aquarium heaters. You must have an aquarium
heater if you have freshwater fish or tropical fish. These fish are sensitive to temperature variations and they
prefer a warmer environment.
The aquarium water temperature can fluctuate with the difference between night and day. A fish's
metabolism and respiratory systems work much better at constant temperatures. Aquarium heaters can provide the fish the temperature they need in order to survive. A
temperature of 78F is perfect for tropical fish.
Types of aquarium
There are four types of aquarium heaters. Submersible
heaters, non-submersible heaters, substrate heater and filter heater.
Submersible heaters - submersible heaters can stay completely under water.
They keep aquarium’s temperature uniform and have an aesthetic role. This type of heater is more expensive than the
others but it is very useful. You must be careful when changing the water to unplug the heater in order to avoid
Non-submersible heaters - consists of a metallic element controlled by a
thermostat and enclosed in a glass or metal tube to prevent contact with water. Non – submersible heaters are
hang-on heaters. They must remain above the water line. The advantage is that these heaters are not at all
Substrate heaters - substrate heaters are perfect if you want to stimulate
plant growth, especially if you have live plants in your aquarium. Also these aquarium heaters are very aesthetical
because they are set below the substrate. They also offer homogeneous heat to the entire aquarium’s surface.
Filter heaters - filter heaters are relatively new on the market. This
type of heater is very efficient and also aesthetic. Usually it is installed into your filter, so when water passes
heater activates and heats the water. The advantage is that all the water is heated equally. A disadvantage would
be that they are rather expensive being so new on the market.
After you have decided what type of aquarium filter you want, you should take into consideration
the size that you need. You must have in mind the aquarium’s size when you buy the heater. If you have a large tank
placed in a big room, you will need a bigger heater. Also it is recommended to place the heater at the opposite
ends of the tank in order to heat evenly. You must decide also the watt of the heater. So if your room is about
7-10F, a heater of 2.5 watt per gal will be enough. The heather should keep the tank at the same temperature, even
if the room gets colder, especially during the night.
Heather could also fail. In order to prevent these problems you can avoid heaters that are
larger than your tank’s actual size, or you could have two smaller heaters. If one heater fails the other can keep
the tank warm until you remediate the problem.
In conclusion aquarium heaters are very important, almost
vital for your fish.