Can you use spring water in a fish tank?
Furthermore, is spring water good for fish?
One possible alternative to tap water is spring water. Spring water is useful if you need to lower the pH or the hardness of your aquarium's water. It is best to buy several different brands in the beginning and test each of them for pH, kH, and gH before picking the one that matches the preferences of your fish.
Furthermore, what kind of water do you use in a fish tank?
Water to Use in Fish Tanks It is recommended that purified mineral water be used instead of distilled water. Alternatively, tap water can be used, but it must be treated to remove chemicals that are potentially toxic to fish.
Minerals are necessary for fish and plants and will also act as a buffer for pH. With proper remineralization distilled water becomes one of the best options for a healthy aquarium. That being said, in small tanks and bowls using pure distilled water can be fatal to fish as it will significantly impact pH levels.