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How To Care For A Betta Fish Without a Filter?

Betta fish are some of the most beautiful and unique freshwater fish out there. However, they’re also known for being a bit more sensitive than other types of fish. Because of this, you have to be extra careful when caring for your betta fish. This includes making sure that you understand the lighting and filter needs of your specific fish as well as maintaining the right water temperature, chemistry, and general tank setup. That being said, betta fish can thrive if you know how to care for them without a filter. It just takes a little more work than with other types of fish. Keep reading to learn all about how to care for a betta fish without a filter.

What Types of Betta Fish Can You Keep Without a Filter?

There are a few different species of betta fish. However, when it comes to betta fish without a filter, only one species is relevant: The Siamese Fighting Fish (Betta splendens). Siamese fighting fish are one of the most popular types of bettas. They’re also the only type of betta that can live without a filter. The other types of bettas are either too delicate or would require a very specific kind of filter that isn’t compatible with other types of fish.

Note: Even if you have one of these other types of bettas, you can still care for them without a filter. You just need to make sure you have the right water temperature and tank setup to avoid stressing them out.

Why Should You Care For A Betta Without a Filter?

If you ask most betta fish owners why you need a filter for betta fish, they’ll tell you it’s because bettas can’t survive without one. However, this isn’t completely accurate. Yes, if you completely neglect your betta and don’t give it any care whatsoever, you’ll kill it. 

However, if you follow the tips below and care for your betta fish properly, you don’t even need a filter at all. Since bettas are so sensitive, many people also assume that they need special equipment and conditions that other fish don’t. While there are a few special considerations, you don’t need any special equipment to care for your Betta. As long as you can keep the water clean and the temperature and chemistry right, you can keep any betta fish without a filter.

Tips for Care of Betta Fish Without a Filter

– Choose A Good Betta Tank – Before you even think about caring for your betta fish, you need to choose a good betta tank. The general rule here is that larger tanks are always better. 10 gallons per betta is a good rule of thumb. Bigger is better for these fish since they’re messy and excrete a lot of waste. You also want to make sure that your betta tank has a tight-fitting lid.

– Choose The Right Water Temperature – Bettas come from tropical climates and thrive when the water temperature is between 78 and 84 degrees Fahrenheit. This can be a bit tricky as most aquarium filters, especially power filters, keep the water temperature a bit colder. If you want to keep your betta fish without a filter, you’ll need a heater that you can set to the right temperature.

– Choose The Right Water Chemistry – Betta fish need water that is soft with a neutral pH. However, you don’t need to mess around with pH control chemicals. All you need to do is make sure that you have enough water conditioner to neutralise your water.

– Choose The Right Aquarium Decor – Bettas are messy fish that create a lot of waste. This means that you need to be careful when choosing aquarium decorations. Anything that can break down and release harmful toxins into your water is generally a bad idea. However, there are a few decorations that are safe for betta fish.


This guide teaches you everything you need to know about how to care for a Betta fish without a filter. These fish are a bit more delicate than other types of fish and require a specific water temperature and pH. However, you can keep a betta fish without a filter. All you need to do is choose a good betta tank and make sure you maintain the right water chemistry and temperature.



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