

Image Credit: Moo teaforthree, Shutterstock Can You Put Goldfish in a Heated Tank? For the most part, no, you will not one, particularly for the spring, summer, and fall months. However, if you live somewhere the temperature regularly dips below 60 or 55 degrees, then yes, you will want a heater for your outdoor pond. Goldfish need the water to be at least 55 degrees, and this is the most important factor to consider here. Therefore, whether or not you require a heater for your outdoor pond depends on where you live. Ideally, the water should not drop below 60 degrees Fahrenheit, although this is still quite cold. Goldfish, such as the common goldfish, fancy goldfish, and other members of the carp family, such as koi, are quite comfortable in cold water. Most of these fish can easily survive in waters as cold as 55 or even 50 degrees, which is indeed quite cold. Keep in mind that the more surface area of water your aquarium has, the faster the heat will dissipate.įAQ Do My Goldfish in My Outdoor Pond Need a Heater?.If you put a hood on your aquarium, it will keep a lot of the heat inside, whereas not having a hood allows heat to escape. An aquarium hood can make a difference too, or in other words, a lid.On the other hand, if the tank is located in a dark area with lots of ventilation, it will help keep the water cooler. For instance, if you have an aquarium located in an area that is sunny a lot and has no air circulation, it will increase the water temperature.

Another factor that will make a difference in-tank temperature is where the aquarium is placed.Lights give off heat, and this should help, but be careful not to overheat the tank. If you need the tank to be a bit warmer, and you don’t want a heater, another option is to get a slightly stronger aquarium light or to move the existing light closer to the water.The number one way to increase the water temperature of a goldfish tank is to use a heater, ideally, one where the temperature can be adjusted.
