Superior filtration media Alamo's Micro-Z granular filter media outperforms conventional multimedia materials due its unique structure, allowing particulate to penetrate deeply into the filter bed to provide superior filtration at increased flow rates.Physical PropertiesColorLight GreenBulk Density55 lbs. per cu. ft.Specific Gravity 2.2 gm/ccMesh Size14x40Uniform coefficient 1.9Hardness (Mohs scale)4Features & BenefitsHigher solids loading capability Superior filtration performanceReduced backwash frequencyRemoves finer particlesReduces pressure dropProvides higher flow ratesLight weightReduces shipping costEasy to handleConditions of operationRecommended bed depth 36" - 48"Recommended freeboard50% of bed depthService flow rate12-20 GPM/sq. ft.Backwash flow rate 12-16 GPM/sq. ft.Backwash bed expansion30-40 percentNote: Allow bed to soak overnight before initial backwash MICRO-Z vs. Conventional Filter MediaMediaNominal Micron RatingLoading CapacitySand201.0XSand & Anthracite151.4XMultimedia121.6XMicro-Z52.8X