Medium Density
The Green Matala® filter media can follow thereby trapping a medium size particle. Both Green and Black mats clean out very easily by simply shaking the pieces out before draining the sump. When you use the Black or Green Matala® filter media for solids filtering you may use the garden hose to spray clean them. The dirt falls off very easily.
A good biofilter needs a lot of surface area with open spaces between for good aerated water flow. A high surface area is useless if the passageways are so small that water flow cannot penetrate.

Black Matala Media
Low Density The Black Matala® filter media can be used as a support grate for other layers of media due to it’s very sturdy and open design. In a settling chamber the Black will slow down and trap...(click on product image for more details)
Blue Matala Media
High Density The Blue Matala® filter media will filter out a much smaller particle and yet still maintain good flow distribution. In larger systems all four types can be used in sequence to...(click on product image for more details)
Grey Matala Media
Super High Density The Gray Matala® Filter mats will filter out a much smaller particle and yet still maintain good flow distribution. In larger systems all four types can be used in sequence to...(click on product image for more details)