I have two female leos who are both 14-15 years old. I got them back when it was acceptable to use paper towels as long terms ground covering. Both my girls are active but currently underweight. Not because of health concerns but because we had some harsh and unexpected seasonal changes during a move last year. They are both currently gaining weight slowly but steadily. Nothing i am worried about... however they have lived their entire lives without substrates other than their moss in their moist hides. Could I safely change them over to substrate? Should I even worry about that? Thanks so much!
