I have a gravid female panther. She's pink and black right now. She mated about two weeks ago. My dilemma is her cage has a potted scheffelera with no room to dig in. I could take that plant out and just put potted soil in a pot 12 by 12. Does it have to have a plant in there? I have a huge 5 gallon container that would be good but I've been advised to have a pot in the cage. What is the best method for me?