... Filter Media for sea waterMaterial: HDPEColor: Natural White,Blue, green, gray etcCooling type: Counter-flowFunction: Pond, Fish Farming, Aquarium ... water treatmentSurface area: >500m2/m3Sample: FreeCertificate: ISO9001:2008Packaging & DeliveryPackaging Details:paper box, bag, etc.Delivery Detail:As we negotiatedBio Filter ... of biologically active carrier.Bio Filter Media for sea water ...