This system includes:Fleck 5600SXT AIO Oxygen Chamber System Digital Control Valve ,9x48 Fiberglass Mineral Tank,3/4"or 1" stainless steel by-pass,1 Cu. ft of Filter-Ag ,1 Sleeve of gravel ,1.05" Riser Tube ,Funnel and Cap ! https://www.aquascience.net/filter-ag-system-with-9-x-48-tank-fleck-5600sxt-aio-oxygen-chamber-system-digital-control-valve