T5,T8,are all different bulb diameters.As long as you are not having live plants,you really do not need to worry too much about that.The lights you pictured will be fine.
heres a site with some you can look over they come with reef bulbs i think one 10k and one actinic.
the bulbs are pretty low quality. but these are the cheapest new lighting you can buy. odyssea its like rc cola