YOu can try to spot feed it...meaty stuff like shrimp, squid...see if it is attracted to it. But unfortunately it may not be. If not, I strongly encourage you to return it, as it most likely will starve to death in your tank after consuming good little critters in the sand. Must emphasize that they do not eat algae or red slime, which is why they are often purchased...nor is it likely that they eat much detritus. If they did, it is unlikely so many would die in tanks.