Hmm... never liked the blackwater look. The brown background just doesn't do it for me. Nasir, I'm sure you've seen Amano and how he photograped some of his pictures. He has some sort of scroll held together by a tripod (similar to those used for power point presentations), then he put a light in front of the scroll but behind the aquarium. That way, you can have a grey background with some slight hint of gradient colours. Looks excellent IMHO.