HydroLogic is proud to introduce the first Carbon Block to use NSF61 listed greencarbon. This high performance coconut shell carbon is manufactured using a patented process that significantly reduces harmful greenhouse gas emissions. These carbon blocks are made using coconut shell greencarbon which has more micropores than other types of carbon and a unique binder system delivering a product with superior absorption capacity and kinetic dynamics. This combination of high performance carbon, unique binders, and proprietary manufacturing process delivers exceptionally low pressure drop, high dirt holding capacity, and excellent contaminant reduction.