Your best bet it talking to one of the many hydroponic supply houses. Way to Grow, being one of them that will have more answers that you might have questions. Give them your specs and they will suggest lights, filtration etc.
That's true, and when it comes time to physically build your set-up, no matter what you tell the guys at Home Depot, they'll all assume you're growing weed. I even had a few guys tell me, "Just go to the weed place, they'll know what you're talking about."