The fixtures they have at HD/Lowes are T5 normal output, not high output, so the 48" bulbs are 28W instead of 54W. I'm pretty sure T5HO bulbs won't work, but there is no reason why you can't still use the fixture with normal output t5 bulbs.
ya im not gonn grow plants yet i just wanted the nice crisp lighting t5 provides i wanted to use like a coralife 10k and 6700 sunglo or are thos HO bulbs
hmmm ok thanks for the help so far it seems like itd be cheaper to get a 36"current t5 ho of the internet than to do this the only advantage this way would be it would mount in my wood canopy instead of having to remove it all together