Filter Media » Mechanical Filter Media

The process of mechanical filtration removes particulate material from the water. This particulate matter may include uneaten food, feces or plant or algal debris.

Mechanical filtration is typically achieved by passing water through materials which act as a sieve, physically trapping the particulate matter. 

Numerous materials are suitable as aquarium filtration media. These include synthetic wools, known in the aquarium hobby as filter wool, made of polyethylene terephthalate or nylon. Synthetic sponges or foams, various ceramic and glass and silicon products along with igneous gravels are also used as mechanical filter materials.