Oooh i just had a thought lol. My sister has some plecos in a 60 gallon. Do plecos like sandl. They are quite large. I dunno how large,but they are. They are also in with an oscar,couple goldfish,small shark fish of some sort,some kinda fish that looks like a silver dollar lol. I know not that helplful in the name department but I dunno all the fish yet. Im sure she could use like a good portion of the sand in her tank. Thatd work out great haha. Just dont know if she is up for maintaining it. Heh. Well i could always still give her the bag and well its outta my hair! Lol. So just a thought. Im gonna go look it up now.