looking really good, i'm sure this is going to come out great given how much thought you're putting into it
the only thing i might suggest is a lip coming down from the front of the overhang you're attaching the lights to, just to keep from being blinded every time you look at the tank. not sure what your light fixture is gonna be like, so maybe disregard that.
Appreciate the feedback. I am designing a mixed 150 MH with approx 30 LED DIY light. It will be contained in an enclosure, the LEDs have optics, the MH has reflector. But I will definitely try and dress up the stand with some trim especially on the overhang. The idea is purely a way to hang a light fixture and hide my plumbing. My couch is on the side of the tank and it will look silly pulled off the wall staring at the plumbing behind the tank, IMO. Wanted to keep it simple, I am no carpenter