Matala Black Biological Filter Media - Half Sheet

The Black Matala can be used as a support grate for other layers of media due to its very sturdy and open design. The Black Matala is used widely as a large particle size solids filter. A single layer 1.5 inch thick can filter out things like leaves, large clumps of algae, cigarette butts, seed pods, etc. However, if you use multiple layers it can really filter out some smaller particles like medium size koi pellets, small bits of algae, tiny leaves and plant debris, etc. The Black Matala is highly under utilized. We have designed filter tanks with 4 to 6 layers of Black Matala (6in. to 9 in. thick) as a prefilter with flow rates approximately 10 gallons per minute per square foot and essentially nothing but the finest dust particles get through. The flow rate per square foot is very important. In a settling chamber a single layer of Black will slow down and trap large particles and hair algae. Each additional layer you add will trap a smaller and smaller particle without clogging. That's the big advantage to Matala media in general, if you use it correctly, it can hold tremendous amounts of debris without clogging.