Eheim Ehfimech Ceramic Tubes Shaped as smooth, hollow ceramic tubes, this mechanical filter media works much like a sieve trapping articulate waste as it passes through the material.

Key Features:

• A coarse mechanical filter material which is to be used as bottom layer filtering
• Its hollow ceramic design creates eddies which disburse the water into many paths
• It traps large debris while creating an even flow of water for subsequent layers