If you are starting an aquarium for the first time, tap water is likely the best choice. It is inexpensive, easily prepared, and is generally of known chemical stability. But before you get too carried away, you should check out a few other choices. Here are a few tips on choosing the best water for your aquarium. Also, consider how the water will be used. Some aquariums use filtered or distilled water. Spring water can be a good choice for your aquarium. It can be used in place of distilled water, but it must be remineralized.

Rainwater is also a natural source of water. But the risk associated with it is that it can be polluted and contain minerals that are not friendly for your fish. Moreover, you must consider atmospheric pollution before collecting rainwater to use for your aquarium. If rainwater is mixed with other water in the area, it will be acidic and injurious to your fish. To avoid this, make sure that you test a sample of the water before adding it to your aquarium.

Bottled water is another option. Although it is cheaper and convenient, bottled water is not a good choice for aquariums. The water contained in bottled products is typically very low in minerals and does not support the health of your fish. Moreover, most companies will not tell you how they distill their water. Therefore, you should ask them to state the process they use. It is also important to note that distilled water contains copper, which is not good for marine life.