What Kind of Water for Betta Fish?

The type of water you put in your betta fish’s tank can have a major impact on their health. Water might look the same, whether it comes from your faucet or from a bottle you buy at the store. But, just like the air we breathe, the water betta fish live in needs to be just right. We want to replicate their natural habitat and required nutrients. By following these water guidelines, your betta fish will be happy, healthy and beautiful.

Recommended Water Parameters

Betta Water Parameters Chart

Tap Water for Betta Fish?

Tap Water

The water most readily available for most of us is the water that comes straight from a faucet. Depending on where you live, tap water usually has added chemicals like chlorine. These chemicals make tap water safe for us to drink. Those same chemicals that help us are capable of hurting, or even killing, a betta fish.

Luckily, there are plenty of high quality, and inexpensive water conditioners to remove chemicals from your tap water in seconds. This makes it safe for your betta fish to live in. There are betta-specific water conditioners and one’s for freshwater fish in general, either are fine to use.

Tap water is excellent for betta fish because once you remove the chlorine, chloramines and other heavy metals, it contains a variety of nutrients and minerals betta fish need to thrive. It’s also very easy to mix hot and cold water together to make it the perfect temperature for your betta’s habitat (test with a thermometer).

Betta fish are happiest and healthiest when the water temperature is between 76 and 82 degrees Fahrenheit. In order to keep your water temperature within that range, you may need to purchase a heater for your betta fish if the surrounding room is colder.

Spring Water for Betta Fish (Bottled Water)?

Spring Water for Betta Fish

Bottled spring water is a more expensive alternative to tap water, but unlike distilled water, it hasn’t been processed to remove minerals and nutrients. This water will not have chlorine in it, either, so it is safe to use in betta tanks as long as the pH levels fall in line with safe betta levels.

Always make sure to check the pH of your water before adding it to your tank. Different brands of bottled water contain different pH levels due to their processing. Make sure you have pH up or down treatments available to alter the level if necessary.

Gallons of spring water can be purchased for a dollar or two at your local supermarket, and if the pH level is fine, it already contains the nutrients your fish will need to stay healthy. It can also be kept on hand in the same room as the tank, so the temperatures of the water in the bottle and the tank should be similar. A stress coat additive is also recommended when using spring water.

Distilled Water for Betta Fish?

Distilled Water for Betta Fish

Distilled or purified water, is very different from regular tap water because it has been processed to remove all chemicals, minerals, and nutrients, leaving you with nothing but pure water. While distilled water has many uses, it should not be used in betta habitats without proper treatment to add nutrients and control pH levels.

Betta fish living in untreated distilled water lack many of the minerals they need to survive, and as a result, will lack energy, have a dull looking appearance and could die. It does not make sense to use distilled water because of the required addition and measurement of nutrients and pH. Use tap water or bottled water instead. This kind of water for betta fish is not recommended.

Betta-Specific Water

Betta-Specific Water

You may also come across water that is labeled specifically for use with betta fish. This bottled water has been pre-conditioned for betta fish. It falls within the correct pH and has been stripped of harmful chemicals and metals. Using this water is not required since you can treat tap water on your own. It’s also a lot more expensive. The choice is yours, however, if you want the convenience of water that is ready to add to your tank immediately.

Well Water for Betta Fish?

Chances are, those who live in a rural area without access to city water, are using water that comes from a well. While you might think this water is safe because it hasn’t been treated with chemicals like municipal tap water, you’d be wrong.

Well water can contain chemicals used in pesticides and fertilizers or high quantities of heavy metals like copper or iron. Problems may also arise if you’re treating your water with chlorine to remove contaminants for drinking.

Most local pet stores will test your water if you bring in a sample. This is highly suggested if you’re unsure. Though many conditioners treat heavy metals, chlorine and other contaminants that could hurt your fish, there are options available to treat only heavy metals too. Always make sure the water’s pH levels are appropriate for your betta fish too, something a test will tell you.

Betta Fish & Water pH Levels

It’s important to keep pH in mind when establishing a new tank or changing out the water. Betta fish prefer a pH between 6.5 and 8 but can tolerate slightly more acidic water if the change is made gradually. For the most part, water will maintain a pH near 7, which is considered neutral.

For bottled spring water, pH levels can range anywhere from below 6 to higher than 9. No water is ever going to be a perfect 7. Oxidation occurs the second it’s exposed to the open air. To make sure your betta fish is in the highest quality water possible, perform a pH test on your tank’s water BEFORE adding him or her to the tank. Test strips are inexpensive and can save your betta’s life.

As your betta fish poops in the tank and as uneaten food and debris collect, the pH will increase. This is why water changes and cleanings are so important. The smaller the tank, the faster the water’s parameters can fluctuate.

Changing Your Betta Fish’s Water

Always limit drastic changes in temperature and pH. Betta fish need to get used to the new water in their tank. Cycling, partil water changes, and acclimation can really help. These reduce stress which is very dangerous to a betta fish’s health.

Perform 20-35% partial water changes in their tank at evenly spaced intervals. This will depend on the size of your tank, and whether or not it is filtered. Full water changes are also recommended on an as needed basis for deeper cleanings.

For example, a 2.5 gallon filtered tank involves cycling 20% once or twice a week with new, properly treated water and a full 100% water change as needed for deeper cleanings (i.e. algae buildup, debris, disease, etc.). This keeps the water as consistent as possible; lessening the amount of ammonia, bacteria, and stress on your betta fish. Unfiltered tanks need closer monitoring as nitrogen cycles are harder to regulate.

What to Remember

The most important lesson to remember is that not all water is created equal. Water quality varies greatly depending on the source. Water parameters should be taken into consideration when establishing or renewing water in your betta’s tank. Tap water or spring water are the best kinds of water for your betta fish. Keep water test strips available to easy testing.

You can also add aquarium salt to your betta’s water to help protect your fish from common parasites and fungi. Always dissolve and treat it in a separate container before adding it to your betta fish’s tank.
The addition of aquarium salt also reduces stress and swelling, aids in a healthy slime coat, and promotes healthy fin growth. Furthermore, it recreates the salinity in their natural habitat and can prevent harmful nitrate intake.

Did you find this information helpful? Still, have questions about what kind of water to use for your betta fish? Let us know in the comments below.

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