We all need a course or two in the fish tank interior design... then meet up all together at a local wade-in creek to play with sticks and rocks in the mud, then proceed to a local Home Depot and assail the paint sampler board, followed by a less formal gathering at a Hobby Lobby, Michael's, or Joann's Crafts until they throw us out on the street...
I hope the owners welcome reactions. I for one enjoy hearing what others think of what they see, how they'd change it if it was them, etc. and why.
After much pain in elimination process, for me it was a toss up between 1 and 3. Love the play of light in 3! 2 is a stunner but too dim. If it was lit up better, it'd be a winner me thinks.
I chose 1 in the end for the overall balance and grace.