It all depends on what you mean too it's too strong. I changed the AC
fans in my systems with 24 volt DC
fans and ran them at 12 volt DC
transformer in my 55 canopy. This cut down on the noise and the flow. In my MH
fixture noise was minimal with 12 volt fans running on 12 volts they where a lot quieter than the 110 volt AC
fan. I get my fans from a electronics salvage but they are computer fans. What size fan do you want to replace?