The premium breeder box from Ziss is designed to maximize water flow through the box. A hose is connected to an airstone to bring water into the box. A stainless steel mesh screen on the bottom allows additional flow. The top also contains a convenient feeding hole. Two hanging methods are possible. First are the Ziss super strong suction cups which most people will use. Second is a hanging bracket that will only work for rimless aquariums or small tanks.