Brightwell Xport BIO Block 1.5″ (8pk)

Ultra-porous Biological Block Media with Superior Performance CharacteristicsOverviewDesigned to be used in marine and hard freshwater aquariums with a pH of 7.5 or overHighest porosity and largest useable surface area, per unit weight or volume, of all filtration media available anywhereProvides huge amounts of aerobic and anaerobic surface area for efficient bacterial colonizationProvides over 40,000 square feet (3,716 square meters) of surface area per liter of medium. One 2” block has about 10,000 square feet of useable surface area for bacterial colonization, a 1.5” block has about 4,000 square feet of useable surface areaWhen properly colonized, and used as directed,…