i just bought an old 400 watt hps system and im not sure if it works or not because i plug it in and all i can hear is the buzz of the ballast but the light does nothing i have only had it plugged in for a few seconds because electricity kind of scares me and im affraid of getting electrocuted or starting a fire. how long does it take for a 400 watt hps to start giving off light? i know my 150 watt hps would let you know right away when you plug it in.
michaelpeg Reviewed by michaelpeg on . Q about hps ignition i just bought an old 400 watt hps system and im not sure if it works or not because i plug it in and all i can hear is the buzz of the ballast but the light does nothing i have only had it plugged in for a few seconds because electricity kind of scares me and im affraid of getting electrocuted or starting a fire. how long does it take for a 400 watt hps to start giving off light? i know my 150 watt hps would let you know right away when you plug it in. Rating: 5