Once i move my africans in about 2 weeks i would like to turn my 46 gallon into a pleco community tank. Would a sand Substrate be ok? Of course id have a nice fat peice tasty peice of driftwood in there but my main question is what plecos can i put into it. The Dimensions are 36" long, 18" at the center of the bow and 20" tall. i believe its around 12 inches wide at the sides.