Grow Room Intake and exhaust fans for Mars-hydro 48 reflector LED panel

[gtx780]

Hi guys! I would like to find out how strong fans do i need for a Mars-hydro Reflector 48 LED panel? I mean exhaust and intake fans. I plan to grow only one plant under this LED panel (draw power 100W, real power maybe 150W(?)) in a 160 cm high cabinet and put only PC fans for exhaust and intake. Will this be enough or too weak? If its too weak please could someone advice me better fans? Thanks in advance