t5's are awesome lights for veg/small plants , buying the quick connect reflectors for them helps A LOT !
but as k.i.m and johnhenry mentioned , it wont be enough as the plant grows bigger/taller
lst the plant if your experienced enough as a grower and ready to give it a try , and get some cfl's to hang half way down the plant on its sides , you can make your own diy cfl lights cheap , dollar store extention cords with the female end cut off then bare the wires and attach them to a 2 dollar socket that you screw the cfl into and poof , hanging cfl for approx 6 bux
peace