I've had decent results with a 300w black box and T5 hybrid setup in the lowboy. Things are growing and keeping decent colors. I have plenty of seeds planted waiting for them to grow, but now I'm nearly out of room so it's time to expand.
Lowboy #2 is in place, drilled and ready to be plumbed, but that'll have to wait till we get back from visiting family for Christmas. Learned the hard way you don't do anything drastic to your setup before you leave town!!!!
Lowboy #2 will be plumbed into the same system and run a gyre 250 just like
#1, but this one will be cooked with an 8 bulb ATI fixture. My biggest concern will be heat during the summer months, but I'll tackle that issue when the time comes.