Well I think that bottom line is there is not much to look at. What kind of feedback were you looking to get? Filtration, aquascaping, stocking? I am not saying your tank is bad it just does not have a bunch of WOW!! I would go with white sand, and no macro algea. I think that would be a great change to your tank and would look great with a black back like you have. If you change, definitely post some pics as to what it turned out to look like.