What Kind of Water is Best for Betta Fish?

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The water that you put into the betta’s fish tank is an important thing to ensure that they remain healthy. The water parameters should be adapted to betta’s requirements and the water they encounter in their natural habitat.

Even though all types of water might look the same, it is not the case, and it can have a big impact on the quality of life for the fish.

The best way to go about this from your part would be to do some research and find out what is the best water for your betta fish.

Fortunately, we have done this for you, and in this article, we will present you with all the facts and information that you need to know about betta and the water they need.

You can follow these guidelines to ensure that your betta fish will live in water that resembles their natural habitat in the best way possible.

Best Water Parameters for Betta Fish

Knowing the ideal water parameters for the betta fish is crucial for keeping them as healthy as possible and ensuring that they live longer. Bettas live in Southeastern Asia, which means that they live in tropical or sub-tropical conditions.

This means that the water should be quite warm. The ideal temperature of the water should be about 76 to 80 degrees Fahrenheit (24.5 to 26.5 degrees Celsius). Try to ensure this temperature at all times.

When we take a look at the ph of the water, it should be at a neutral point of 7. It can vary slightly – anywhere from 6.5 to 7.5 is still fine, but a neutral ph works best for bettas. This is how the water is in those rice paddies and still waters of Southern Asia, and you should try to do it the same.

The GH of the water should be around 30-120, and KH should be between 80 and 120. Try to recreate these conditions in the tank to enable a perfect environment for the betta fish.

Is it Safe to Use Tap Water for Betta Fish?

It is perfectly fine to use tap water for the betta fish tank. But you have to keep in mind that the tap water alone is still not quite adapted to the way betta fish prefer their water to be, so you will need to make some adjustments before using this tap water.

Firstly, the tap water contains way too many chemicals such as chlorine for the betta fish. Fortunately, you can limit and eliminate the chlorine from the water using a conditioner.

In addition, the tap water should be adjusted to the parameters that bettas prefer before putting them into the water – adjust the temperature and the ph to the desired levels before putting the bettas in.

In general, tap water is a great source as long as you adjust it to bettas and provide them with a good source of water to live in.

Is Bottled Spring Water Good for Bettas?

Now, this is a decent alternative for the tap water. If for some reason, you prefer to use bottled water instead of tap water, you can do so. But keep in mind that this water is more expensive than tap water most of the time, and you will have to go through the hassle of purchasing it in the first place.

But bottled spring water is still a good source of water if you condition it first.

Unlike distilled water, bottled water still contains some essential minerals and chemicals that the distilled water doesn’t, which is why bottled water is still a good choice for your tank. Just remember to check the ph of the bottled water first, which is indicated on the bottle itself.

You can purchase big bottles for not a lot of money, and it contains nutrients that are needed for the betta. But make sure that the temperature is at an optimal stage before you put the bettas into the water. Bottled water can be a decent alternative to tap water.

Can You Use Distilled Water for Betta Fish?

No, you should not you distilled water for your betta fish. It can be used under specific requirements that you add the chemicals and adjust it properly to the fish in the tank, but that would take way longer than you would do with tap water or bottled water. The distilled water is pure water, rid of any chemicals, minerals, and nutrients that betta fish require to live.

It is not the best option to use as water for the betta fish tank. While you can use it, it is not worth the time that you would have to spend preparing the water for the tank. It is much easier and more convenient to do it with tap water or bottled water. Distilled water doesn’t contain any minerals whatsoever, and they are essential to keep the betta fish healthy.

Another alternative is to buy the water that is prepared especially for the betta fish, which is called as betta water. But it might not be available in every store out there, so tap water or bottled water is still a good way to go here.

Is Well Water Safe for Bettas?

It depends is the answer. I know it is not a definitive answer, but well water can be an option to some people that are not using water from the municipal water supply and use a well instead.

The thing with well water is that it depends whether you are treating it with any chemicals or not before it is used. If you do use chlorine to condition your water, then you need to get rid of it before you use it for the tank.

Another issue with well water is that it tends to be full of heavy metals such as zinc, which is not a good thing for bettas. These metals can be really harmful to the fish.

If you are not treating well water in any way, then you should prepare it thoroughly for the bettas before you use it in your betta tank. Get rid of the metals and the chlorine, and it will be fine to use in the betta tank.

In short, the well water can be used, as long as it is free of those heavy metals and the chlorine. Prepare the water in terms of temperature and ph, and it is good to go. Observe the fish and then adjust it as needed.

Best PH Level for Betta Fish

As we have already discussed, it should be your primary goal to provide the betta fish the water parameters that are as close as possible to those in the natural habitat. This also concerns the pH level or the acidity of the water.

For the betta fish, the best ph levels are at a neutral point, which means the ph of 7.0. But the acidity can vary, and the bettas can adapt to levels that can vary slightly. In general, these permutations should not be big, and the ph should be around neutral. Ideally, it should be around 6.5 to 7.5.

Changing Water for Betta Fish Tank

As a part of your maintenance routine for the betta fish tank, you should replace the water from time to time to keep it as fresh as possible. It should be done at least once a month, and ideally, more often.

You can do this once a week or maybe twice a month. As long as you circle the water and replace it now and then, the betta fish tank water will be clear.

How to do it? It is quite simple – remove about 10 to 20% of the water in your tank, and replace it with fresh water.

Now to do it, the water that you are putting into the tank should be conditioned and free of chlorine, and it can be of temperatures from 20 to 26 degrees Celsius. Just make sure that you do this now and then to ensure that the water is as fresh as possible.

Best Water Conditioner for Betta Fish Tank

To condition the water, you will have to use a water conditioner. This conditioner will remove any unwanted chemicals from the water, such as chlorine and heavy metals. These chemicals can harm your betta fish, and you should strive to remove them before placing the fish into the water.

As for recommendations, we recommend that you use this water conditioner. It is high-quality and very efficient and you will not have to worry about those chemicals anymore.


Water is the source of life for fish. It should be at optimal levels for any fish to live into it to ensure that they are healthy and they live for longer. It is the same for the betta fish.

In this article, we have covered the best water parameters to use in the betta fish tank, and we have covered all the specifics about tap water, well water, bottled water, and distilled water.

Author Image Fabian
I’m Fabian, aquarium fish breeder and founder of this website. I’ve been keeping fish, since I was a kid. On this blog, I share a lot of information about the aquarium hobby and various fish species that I like. Please leave a comment if you have any question.
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