So im getting a 300 gallon aquarium, and would like to have 1-2 stingrays. More than likely a pair of motoros, or maybe throw in a retic ray (i know how difficult they are to get to eat non live. i prefer the motoros). I am still setting up the aquarium. i have done alot of research when it comes to safety and needs. But i am still not never knowledgable about what sand to buy. Where can i Buy cheap aquarium sand? (non silica). also for votes, what color? black or white?