How to change betta fish water

In order to maintain the right water conditions for your betta fish, you will need to do water changes. The perfect time to do this is when you are cleaning your aquarium.

Below are the basic steps for changing water, but you may also like to read our guide on cleaning, which includes instructions on doing a water change whilst cleaning.

You may also like to read our articles on water temperature, and the type of water to use for a betta fish and how to test it.

Preparing the water

Prepare your water in a clean container or bucket. Make sure the container hasn’t had any harmful substances in it such as chemicals or cleaning agents; it needs to be completely clean.

Rinse it thoroughly with fresh tap water. Fill your container with the amount of water needed and the required amount of aquarium treatment.

If need be, treat the water accordingly (read our guide on treating water here).

Leave for 24 hours before adding to the aquarium. Once 24 hours have passed, remove the amount of water needed from the aquarium using a measuring jug.

Now carefully add the water from the container to the aquarium.

You may want to check that the water you’re adding to the aquarium isn’t too cold. It doesn’t need to be at the exact same temperature as the aquarium, but the closer the better. Average room temperature (70℉) is fine .

How often should I do a water change?

This depends on whether or not you have a filter in with your betta. If you do have a filter, you’ll only need to do a 40% water change every 2 to 3 weeks. If you’re keeping your betta without a filter, it can vary.

Some of the photos in this article are from Spec-Tanks.com