I agree, it doesn't look bad if this is the type of tank that you want, but the middle....above the two corraline encrusted rocks looks really jambed packed. Try taking some out, and rearranging the rock to allow more flow, and room for the fish to swim in and out. You may be surprised that you won't have too many pieces left over. Are you thinking about adding coral? You will need shelves for them to sit on. Otherwise, very nice start. Good luck with it.