$68 isn't too bad for a fixture + bulb. So it is the T5, which is great as they are the stronger bulbs. But I can't tell from the picture if the bulb it came with is the T5 5.0, or the 10.0. The 5.0 is basically equivalent to a T8 10.0, so it will still work for you if it is only the 5.0.
-Brandon
-Brandon