No that bulb uses a smaller voltage to start up so your 400w would blow it up.
Zandor Reviewed by Zandor on . bulb not working! ok so my bulb is not working. i have a 400watt hps ballast. can i go buy a 150watt hps from HD and use that with my 400 watt ballast until my new bulb arrives? answer please ASAP before the stores all close :( :( :( Rating: 5