Many of our herps would just "survive" in small inadequate enclosures, but we're not looking for our herps to just survive. We are looking for them to thrive. A 4x2x2 is the SMALLEST an ackie should have.single ackie would be okay....
not ideal but it'd survive okay.
Would the ackie survive? Maybe. Would it be happy and healthy? No. The glass would not hold the 12 inches of dirt the ackie needs, nor would it hold the heat they need. Its also not wide enough. The ackie would be touching both sides when turning around. The ackie will have a diminished appetite because of the lack of requirements met for their needs.
Would the ackie live in the 36x18x21 glass enclosure? Maybe. Would it be cruel? In my opinion, yes.