Matala Green Filter Media for Balanced Flow and Mechanical Filtration Matala Green sits between the coarse black and finer blue densities, making it the workhorse of a multi-stage pond filter. It catches mid-sized suspended solids that slip through black media while maintaining enough flow to keep the filter running efficiently. In ponds where a single media type is used rather than a full multi-layer setup, green strikes the best balance between mechanical filtration and water flow. Sold per square foot, it cuts to any shape your filter requires. Where to Use It In a multi-stage filter, green media runs second — after the black pre-filter has pulled out leaves and large debris. It continues removing smaller particles, building up a biofilm layer of beneficial bacteria on its surface as the season progresses. As a standalone media in simpler filter designs, it handles both mechanical straining and biological processing without restricting flow to the point of starving the pump. It's a practical choice for ponds where you want solid filtration without the complexity of a four-layer system. Specification Value Density Coarse-medium / semi-open Filtration Stage Second stage, or standalone in simpler systems Pore Size Finer than black, coarser than blue and grey Standard Sheet Size 39" x 48" x 1.5" thick (99 cm x 122 cm x 3.8 cm) Sold Per square foot Lifespan 2 to 3 years with regular rinsing Maintenance Rinse with pond water, never tap water. Green media handles a moderate debris load and typically needs rinsing every 7 to 10 days during peak season. When rinsing causes the foam to stay compressed rather than springing back to shape, it's time for replacement. Ideal for the second stage of multi-layer pond filters, smaller pond systems using a single media layer, and water gardens where consistent flow is as important as solids removal.
