Fish don’t create their own body heat, so the water temperature in your tank is essential to their health. This may fluctuate with the temperature of your home, particularly during the colder months. Fortunately, tank water heaters will help. This guide will break down some of the most frequently asked questions about fish tank water heaters, so you can give your fish the best possible quality of life. 

FAQ About Heaters & Freshwater Tanks

Do you need a heater?

Most fish tanks require a water heater since fluctuations in temperature can be dangerous for fish. The specific temperature you should set depends on the type of fish in your tank. Most cool water fish will do well in temperatures between 60- and 75-degrees Fahrenheit; tropical fish are healthiest between 75 and 80 degrees.

What type of heater is best?

One popular product is a hang-on-tank heater, which is mounted on the side and partially submerged in the water. Submersible heaters are fully submerged and generally heat the tank more thoroughly than hang-on-tank models. Some fish owners will opt for a more discrete heating cable, which is submerged under the rocks on the bottom of the tank.

Where should you place the heater?

Unless you have a heating cable, you’ll need to choose the right spot to install the heater. Most of the time, you should place a heater next to the filter inlet. This allows the filtered water to warm up before circulating throughout the tank. However, carefully read the instructions to know where to place the specific type of heater. 

What if the water heater breaks?

When it works properly, the water heater keeps the fish tank at a consistent temperature. So, a broken one could be dangerous for your fish. It’s important to keep your eye on the tank’s thermometer to make sure the water isn’t too warm or cold.

If you notice a fluctuation, reset the heater. It is also wise to keep a backup on hand, as you’ll need to replace it if the heater stops working. You might also consider using a heater guard as a preventative measure, especially if the heater is made of glass or you have large fish.

The right fish tank supplies will keep your fish happy and healthy. The team at Gerber’s Tropical Fish in Dayton, OH, is proud to offer a variety of tanks, aquarium plants, corals, and more. You can also browse their selection of saltwater and freshwater fish, filling your tank with a diverse array of species. Once you bring your tank and fish home, you can then take advantage of their maintenance services. Whether you require water testing or a routine tuneup, their professionals can help you keep the tank in top condition. You can visit them online to view a full list of their services or call (937) 297-0515 with any questions.