It would come on but never get bright, sometimes. That's the worst when stuff wont work only sometimes. Hydro store guy said it was the digital ballast, maybe, so I bought a new magnetic ballast for the bulb. After 7 months it would not get bright again, so I took it back to the store and the guy said he'd send it back to the company to see if they want to give me another bulb(They need to analyze it to determine the problem). I also had a bunch iof problems with dual-arc bulbs, samem kind of bullshit.
So I eventually concluded that If I really wanted to try to provide a complete spectrum I should just run multiple bulbs of different colors. So far the bulb problems have been eliminated.