How many watts are you putting off there, and do you know whut strain your using? How old are they right now? I have a box build with two sets of 4 ft long flouros, i just need to build a box for it though. Uh they look good keep updating.
they look good but a little stretched mite want to get the light alil closer... also maybe stronger fan cuz budding will pull your plants down and snap!! no more plants work on building a stronger root but man o man looks good buyddy G+_ growers plus from Tokeman Sam
If you add more light now you will increase what you have or will have. Small HPS above and move the tubes to the sides.