Brightwell Aquatics Xport-NO3 Cubes - ½” Cubes, Sulfur Doped, Activated Denitrification Media, 1000-ML (XPCubeN1000)

For use in marine and hard freshwater aquariums with a pH of 7. 5 or over High surface area results in superior filtration efficiency; Provides over 71, 000 square feet of useable surface area per liter of cubes Utilizes "ultra-activated" material with the capacity to outperform conventional denitrification media; results in smaller space requirements to achieve equivalent denitrification Eliminates the need to perform water changes that are carried out for the purpose of decreasing nitrate May be used in conjunction with Xport Bio Cubes and Xport PO4 Cubes; Made in the USA