【Wide application】– Our biospheres can be used not only for biochemical filtration systems in seawater, but also for biochemical filtration systems in freshwater, which are very suitable for aquarium filters, water filters aquarium and pond filters. PLEASE NOTE: The 16mm bio balls are perfect for aquariums. If you buy for outdoor ponds, you’d better choose 36mm/46mm/56mm/76mm bio balls. 【Keep the water clear and clean】- Greatly helps restore the natural water quality and provide the most suitable living environment for your fish. 【Principle of operation】–When the water passes through the inner space, the time is extended, and the nitrifying bacteria are used to achieve the biochemical filtration effect. 【Ability】–Strengthen bacteria filtering effect, lightweight and easy to carry.
