you just gave me a great idea for a formicarium! it may have been done already? idk
instead of taking the sand out, why not leave it in?
idea: insert vinyl tubing covered in vegetable oil from top to bottom of a clear container, layer a sand/clay mixture and hydrostone or grout. let the hydrostone dry and then take out the vinyl tubing. add sand/clay mixture to the hole the tubing leaves behind as well as a thin top layer of sand/clay. leave plenty of room on top for the sand/clay that the ants will be digging out. other tubes, possibly perforated, or several thin tubes that lead to the different levels can be inserted for hydration, if not this a water tower or two! also, a tube that enters and exits from the side into one of the sand layers through which a heating cable can be inserted for warmth . wallah! perfect for ants that love to dig!
Edited by KBant, November 7 2017 - 3:25 PM.