And it could just be a cheap bulb. Do yourself a favor, and pick up a backup bulb, before you need it. I was looking at I-Power as well. Thinking about grabbing a 600 watt. I am wanting to go to a larger tent. Probably a 48"X48"X72". The only complaint I have heard, is bulbs blowing early, but like I said, could be just cheap bulbs. But I too would like to hear from those that have, and use them.
HomieHogleg