Thelynx Well-Known Member Nov 11, 2008 #1 just got my 400w hps in and the ballasts hum is a bit more than i expected any suggestions on muffling this without causing a fire hazard? any help much appreciated.
just got my 400w hps in and the ballasts hum is a bit more than i expected any suggestions on muffling this without causing a fire hazard? any help much appreciated.
