Betta fish tank heaters

A fun decorative touch over the recent years has been the vibrant Betta fish in small single fish aquariums.  While beautiful and fun to own, one of the key ingredients to having a happy and long-lived Betta fish is getting the right Betta fish heater.  These are designed to manage the temperature of the water and keep it consistent and comfortable for the little guy and let them enjoy their aquatic existence in luxury and comfort.  Bettas are tropical fish and are therefore used to warmer waters and while small tanks are perfect for a Betta, the smaller the tank the more susceptible to air temperature the water becomes, and Bettas like it in the high 70’s to low 80’s.  Which means in most houses, they’ll need a heater.

The top heater for any 5 to 10 gallon tanks is the Fluval Marina Mini, which is submersible, easy to install as it comes with brackets and suction cups and is relatively compact being only six inches long.  The heater is designed to be fully adjustable and incredibly accurate in controlling temperature fluctuations. It comes in two different wattage models for various tank sizes with a smaller 25-Watt model designed for the 5 gallons and under tanks and a larger 50-Watt heater that can handle up to 10 gallons of water.

The Tetra HT10 is another fantastic Betta heater, designed for a 5 gallon tank it is preset to heat the water to 78 degrees, so it has a simple set it and drop it design.  There are LED lights that indicate the status of the tank, if the light is red then the water is heating and if the light is green then the water is currently at the correct temperature.  The simple set it and forget style of usage is fantastic for the submersible heater as it will work in up to 5 gallons of water.

The ViaAqua 50W Heater is another great choice for a Betta heater, as it comes with a lot of the features that are usually reserved for more expensive models but the easy to install and durable device is relatively inexpensive and able to work on up to 13 gallons of water.  Its submersible, has a fully adjustable temperature setting and comes equipped with suction cups to enable easy install as well as being made from quartz-glass making it highly durable. This tough, elegant heater can even be used in some slightly larger tanks than just a Betta tank making this a possible investment for the aquarium enthusiast who seems themselves staying small but maybe upgrading from a single Betta.

Another great option is the Zacro 50W Heater.  Designed for tanks up to 15 gallons or larger, it has automatically controlled temperature and an 18 month warranty to protect the added expense.  The simple submersible design of this heater has suction cups or it can be laid down at the bottom of the tank. It has a simple dial at the top with a digital read out on the wand, letting you know what temperature you have set the heater to, and is well designed from durable plastics protecting the fish from the heating element itself.

The simplest which in some ways is the best option is the simple but elegant Marina Betta Heater.  Designed for up to three gallons of water, the non adjustable, submersible little heater is the perfect option for setting and dropping the 8W device in the tank and forgetting it.  The heater is designed to automatically heat and maintain the designated temperature, making it an east and excellent choice for the small, single Betta tanks so many people keep as decoration around their house.

While owning a Betta is fun and a simple starter pet for many people who are getting adjusted to the pet owning life, there are some necessities.  Obviously there’s changing the water consistently to keep the fish healthy and disease free, there’s feeding it so the fish doesn’t starve to death and then just as important for a happy and healthy fish is there water temperature.  Keeping a warm water fish happy for most people requires a lot of work, warm air temperature or a heater. Going the heater route is usually the best alternative and one way to figure out which heater best fits a certain setting is to check out guides like this one.  Novice tank builders should of course always ask for guidance from an expert but ultimately owners should do whatever makes them and the fish, happy.



Sam is the owner and main writer for Fish Tank Bank. He has been keeping fish and building aquariums for over 20 years.

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