Try a dimmer switch it could help other than that its get a new fan.
BukDatAss Reviewed by BukDatAss on . Noisy Fans/Blowers I recently upgraded my grow room to a pair of hurricane 6" 630 cfm blowers. One for exahaust and one for the intake. My temp problems are a memory now. The plants love the rush of fresh air. Im quite happy with the results. Only thing, the blowers make a lot of noise. Any advice to hush em up would be greatful. Many thanks:thumbsup: Rating: 5