[QUOTE="SICC";4962157]I would, i was going to get a different bulb for my 400 watter but im just using the one i got from HTG Supply.[/QUOTE]
have you done research to see what the actual model bulb is puttin out?
after researching the bulbs, i realized one of the bulbs should not be used in all positions (which it was) it is vertical base up only. a good way to tell is on the emblem it will say something like...400mh/u the /u means universal positions. if it says something like vbu...that is vertical base up. or vbd vertical base down...if it says that, it should only be ran in these positions.