Putting that 400w in there will be no problems but I seriously do think that you need a new ballast. If you know somebody with a multimeter you could check it yourself. Just check out the ballasts output. Good luck......

Have a good grow!:jointsmile:
Psycho4Bud Reviewed by Psycho4Bud on . Crap!! Dead light.. need help ASAP!! Okay so I'll post more details in another thread as soon as I can, but right now I have a big problem. I have a 600 watt HPS in my room, it's ancient, it was a family hand me down. Got everything all set up last night, everything was all good, then this morning I get up, the room is freezing (it's -15 outside) and my light is just barely flickering. The ballast is making a weird noise too. Now, how can I tell if it's the light, and I can just go buy a new bulb, or the ballast, which Rating: 5