Actually,when I first got my original T10 bulbs I had to cut the hours they were on down to 10 hrs. or my plants got sun burn.
The bulbs were Vtech ,93F , 6700K , 3240 Lumems , 40 watts.
I don't know if they make them anymore.
I liked some of these bulbs...some are about the same as the VTech bulbs I liked.
http://www.fullspectrumsolutions.com/full_spectrum_fluorescent_bulbs_33_ctg.htm
Google around and you can find similar bulbs cheaper.
Most of the bulbs I used were about $8.00 - $10.00 each but only lasted about 3 years max.
They ran 12-18 hrs. a day year round.
A small Kitchen Plant that recently got adopted.
Planted the seeds last new years eve.
Grew mostly under LEDs.
http://i403.photobucket.com/albums/pp111/smoemaster_2007/2012%20pics/th_PICT2163.jpg?t=1335592282
http://i403.photobucket.com/albums/pp111/smoemaster_2007/2012%20pics/th_PICT2162.jpg?t=1335592282
http://i403.photobucket.com/albums/pp111/smoemaster_2007/2012%20pics/th_IM004897.jpg?t=1335592282
http://i403.photobucket.com/albums/pp111/smoemaster_2007/2012%20pics/th_IM004898.jpg?t=1335592282