1. By the inflow of surface water into the filter, it can clean the water quickly, raise the light penetration and help the photosynthesis of water plants.
2. According to the size of power head and your demand, you can adjust the flow of surface water by turning the upper adjuster. It's easy to use and won't affect the filtering effect.
3. It's self-floating design and can adapt itself to the water level.
4. It is suitable for any filtering system, including external filters and power head.
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