Light colored sand, dark rocks and black background. Light sand helps keep the colors clean, dark rocks and background accentuate their bright coloration and looks more natural too.
hi, well I have play sand in my tank (il post a pic in a bit) and it looks great, brings out the colours in all the fish.
Just becareful not use to bright lighting.
Playsand cost me £3.99 at Focus, and I needed 4 sacks, so 16quid in all