This black biochemical cotton filter pad measures 50×30×2cm and features a coarse texture. It's designed for filtration purposes, made with durable biochemical cotton material that provides effective mechanical and biological filtration. Key features: • Dimensions: 50×30×2cm • Black color • Coarse texture • Made of biochemical cotton material • Durable construction • Suitable for filtration applications This filter pad can be used in various filtration systems where mechanical and biological filtration is required. The coarse texture allows for optimal water flow while effectively trapping debris and providing surface area for beneficial bacteria colonization. The black color helps hide accumulated debris.