I'm looking for a relatively "cheap" type of substrate for my 220 gallon aquarium. It currently has Pool Filter Sand(PFS), but in all seriousness, PFS is nice, but it's not all that natural looking. What is the most natural-looking substrate out there. If you don't mind, please include, the name; where you got it, or where you can get it, and a picture of it in your tank if you own it. Keep in mind the tank houses large cichlids from Central, and South America.
Justin.
Justin.