Just going back to this one since you said you're new to the hobby and no one answered this. "Black box" is a hobby term for Chinese LED lights with no real brand presence. They are often a bit lacking in features, but are effective and very affordable (often less than ¼ of the price of competing units). This makes them a solid bargain.
Personally, I'd look at doing 2
Reef Brite Lumi LED Pro strips over your tank. They're designed to sit directly on top of the tank with some mounting legs that give them a total height of an inch or so. Only downside is you would have to slide them out of the way to get in the tank, but that's not particularly difficult.
Your tank looks like a 40 breeder (36 x 18 x 16), is that correct?