The t8 bulbs that came with my tank were I think about 15 watts.
Aquatraders has very cheap t5 HO
. You get what you pay for here. aquatraders.com
and fishneedit.com has cheap fixtures that are a lot better quality than aquatraders. Lots of members love them. fishneedit.com
If you click on the link above posted by Convict2161, I have the first one. The coralife fixture and I love it!