SEA TANK 38 30 1. The marine aquarium Glass Tank with Ceramic ring. By biological purification of fresh water and seawater, good water quality is obtained, which is a pure biological enhanced filter material. 2. The marine aquarium Glass Tank with Biochemical cotton. It 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. 3. Our marine aquarium Glass filtration system utilizes the principle of protein skimmer, which efficiently removes various granular dirt and soluble organic matter mixed in the water.