A system, method and apparatus for stimulating a reservoir is disclosed. A slurry is supplied to the work string at the surface, which work string extends from the surface location to a downhole location adjacent the reservoir. A parameter of the slurry is measured at the downhole location and transmitted to the surface location. A control unit at the surface location receives the measured parameter of the slurry and estimates a fracture conductivity of the reservoir using the measured parameter of the slurry. The control unit may alter the parameter of the slurry at the surface location to obtain a selected fracture conductivity to stimulate the reservoir.