I have my female in a tank that measures 60"L x 18"W x 20"H and I want to breed her. From what I've read, everyone has a separate bin or container with soil/sand mix for her to lay her eggs in. Would it work if I put a small container (13"L x 8"W x 6"D) in the tank and cut one of the faces off (like the mark in the picture) and put my soil/sand in that? Its 6" Or should I just buy a separate container? Thanks for the help!!