Feature highlights:The SOBO AQ-901F-913F Aquarium External Filter offers pneumatic water sucking for auto water filling, high performance with individual filter baskets, and a bio sponge compatible with various filter media. It ensures no water leakage due to a high-quality silicone sealing ring and operates powerfully yet silently. Certified for eco-friendliness, it supports compliance with environmental standards, enhancing market access.