Green water in a freshwater aquarium can be a common issue for aquarium hobbyists, but it can also be easily prevented or treated. Green water is caused by microscopic algae that proliferate in the water, giving it a green tint. This is often a result of high levels of light and nutrients in the aquarium. While it may
To prevent green water, it's important to limit the amount of light that enters the aquarium and to keep the water clean and well-filtered. Regular water changes and reducing the amount of food given to the fish can also help to keep algae growth under control.

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