I currently have my little guy on repti-carpet and I want to change it out to 6" slate. Any suggestions on what to use to level these slate pieces out inside my 40 breeder tank? What to use for grout so he doesn't get his toes stuck between the pieces? I thought about using silicon for grout but i don't have anything else to put him in while it is de-fuming/curing. Any ideas/suggestions would be great.