For planted tank lighting, T8 fixtures were made obsolete by T5's. For a low light tank, check out various T5NO options.
Two of those T8 fixtures would work, but not very well. If I remember right, a lot of the little light they emit is lost due to subpar reflectors.
Obviously you will pay a bit more for better fixtures with better reflectors, but you will be happier long term.
ok, i'm having trouble finding a t5 no fixture. all of the normal vendors i use for my saltwater supplies have T5HO, which i know would be too much light. do you have a recommendation or link to a good 30" T5NO fixture?