
BIO-BLOX Bio-Blox filter media is an ultra high surface area media that is created from a variety of different filter thicknesses and densities. Bio-Blox is a loose fill media that is inexpensive and ideal for filling large filters. Use our MB18 or MB22 Mesh Bags to hold Bio-Blox for easy handling. Approximately 525 sq. ft. of surface area per cu. ft. Sold by the cu. ft. or in 24 cu. ft. Gaylord boxes.