I just swopped out me Pacman Frog Gem's substrate and well I let mom talk me into using zoo med's terrarium moss it's this mat of actual moss you put on top of the substrate. Right now I don't know what to think of it and I don't think Gem does either she's never had moss like that before. Gem is my first Pacman I did a lot of research but I thought I'd ask. Nothing beats experience after all!