Anyone ever bought MH bulbs off Ebay?

[Reefer Rob]

I bought the 14000K 400W Plusrite bulbs from Greatdel. Ran them for about months. They were cooking my corals after a few weeks. I'm thinking perhaps the glass on the outer bulb was too thin allowing too much UV or something. Almost every coral in my tank stopped growing, 6 months later and everything is starting to get back to normal. I'm never trying that again!