I have a 50G tank with a few african cichlids in it. I have today take all the gravel out to clean the tank, using a small plastic hose hooked up to the filter to really clean the tank. I am taking the filters out from time to time to clean them, then reinsert them. It is really working out great. Anywhoo, now is my chance to make a few changes. Do you guys recommend gravel or sand? I kinda don't like the gravel I have, its the normal colors, a mix really. Is sand easy to use in a tank like this? What do you guys recommend here, thanks!