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Water conditioner should always be used to prevent chlorine and other unwanted chemicals from entering the system.īetta fish will also need a filter to help with maintaining water parameters and creating flow within the tank. Tank water will also need to be regularly tested for ammonia, nitrites, nitrates, and pH, with regular weekly or biweekly water changes. Tank water needs to be fully cycled and heated by an aquarium heater water temperature should remain constant between 77-83° F (25-28° C) and should be tested several times throughout the day with an aquarium thermometer. What do I need for a betta fish tank?Ī betta fish tank should be treated just like any other freshwater aquarium. Given the right care, high-quality food, and time to flourish, betta fish will fill out a tank no matter how many gallons. If wanting to keep other species of fish with your betta, at least 15 gallons (56.8 L) will be needed.īetta fish are surprisingly active fish, despite their often sluggish appearance in stores. In general, a 5 gallon (18.9 L) tank is the minimum accepted size to house one betta fish some hobbyists will even argue that 10 gallons (37.8 L) is the best option for giving your betta a natural ecosystem. If you would like to know more about why these small tanks are not enough to keep betta fish happy and healthy, make sure to check out our post here. One of the biggest discussions within the aquarium hobby is how much space do betta fish actually need? When shopping for a betta tank, it may be easy to fall into the trap of buying an all-in-one betta bowl or another small plastic aquarium. What is the best size tank for a betta fish?