Filtration system: Ceramic ring (to be cleaned and reused) By biological purification of fresh water and seawater, good water quality is obtained, which is a pure biological enhanced filter material. Biochemical cotton This mini-Glass Fish Tank is mainly used to cultivate digestive bacteria, allowing nitrifying bacteria to decompose toxic NH3/NH4 and NO2 in water and convert them into non-toxic NO3. Therefore, the water quality can be improved, and the survival rate of fish can be increased. Cutting-Edge Protein Skimmer Technology: Our filtration system utilizes the principle of protein skimmer, which efficiently removes various granular dirt and soluble organic matter mixed in the water. By using oxygenation equipment or a vortex pump, a vast quantity of bubbles is produced, creating foam that collects the dirt and impurities present in the water. This innovative technology purifies the seawater, resulting in a clear and healthy environment for your marine life.