hey guys,i need some advice from experience...i just purchased my first leo gecko and have her set up nice.i am looking to make a nice naturalistic display cage.Right now i have paper towel as a substrate but looking for something naturalistic.In regards to calci sand and vita sand,i have been hearing positive and negative..she is a 2 yr old female and can someone recommend a good sustrate and experiences with this calci sand and is it safe to use???..thank u