Isn’t tap water safe for human consumption? Unfortunately, municipal tap water may contain a wide range of harmful chemicals that are perfectly safe for humans, but not necessarily for betta fish. However, not many people realize that there are risks associated with untreated tap water. This includes any type of domestic water supply that comes from a municipal source, and it’s easy to see why they are the most popular choice – the convenience of water on demand is hard to beat. Let’s first dive (pun completely intended) into the most common type of water used in betta tanks – tap water. Here are the most common water types used for betta tanks, and our views on each: Municipal Tap Water Using the wrong type of water can cause problems down the line, so it’s important to get it right the first time. But, the kinds of water you opt to use in your betta tank lays the foundation for the rest of the tank setup. Don’t get me wrong – water parameters are important and we’ll discuss them in more detail below.

Many people focus exclusively on the water parameters when setting up a new betta tank.

Modern nursery with fish tank