Good job with the setup. Clean and efficient for sure, but like a couple others said, the lack of reflectors IS going to waste some light. Being that you have the lights so closely mounted, it'd be hard to find a reflector that would evenly distribute light to the plants with the setup and space you're working with though. To use any decent reflector, they'd have to be spaced further apart than that to work.
Also, nice job mounting those ballasts and electrical connections off the ground and out of the way. Being able to access the plants without having to tiptoe over obstacles is key. Lots of growers underestimate little details like that, and can often lead to neglect as a result of bad planning/laziness, or inaccessability. You may not be growing hydro, but that's something I always made sure to do just in case some kind of fluke accident happened, and water spilled everywhere. I'll be anxiously waiting to see how things turn out. Good luck.
