It is not necessary to have a reverse osmosis (RO) system for a freshwater aquarium, but it can be helpful in certain situations.
RO systems are primarily used to remove impurities and minerals from water, resulting in very pure water. In some cases, tap water may contain high levels of minerals, such as calcium and magnesium, which can lead to hard water. Hard water can create problems for aquariums by causing mineral buildup on equipment and in the aquarium itself, as well as potentially harming certain species of fish and plants.
Using an RO system to remove these minerals can help create a more stable and healthy environment for aquatic life, especially if you plan to keep sensitive or delicate species of fish and plants. However, it is important to note that removing minerals can also remove important trace elements that may be beneficial for aquarium inhabitants, so it is important to monitor water parameters and supplement as necessary.
In summary, an RO system is not necessary for a freshwater aquarium, but it can be useful in certain situations to create a stable and healthy environment for aquatic life.
