thanks for your reply. I have added springtails! by the time they arrived, much of the moldy smell had subsided, and most importantly, my Rainbow Boa excreted her first hair ball and went back to her normal perky self, which is what precipitated my post. at some point she will just be too big for this planted space and I plan in the long run to move her to a larger, more vertical space. for now, she needs the high humidity and heat and as long as I can get a handle on the mold with symbiots I'll stay the course with the current vivarium. Thanks for the dart frog suggestion. I was directed to check out Josh's frogs, where I oredered the springtails but I am always up for more exploration. I got to speak to Josh and he said the same thing as you. particularly that children will enjoy them more than red eyed tree frogs because they will be active during the day. I may set up a dart frog vivarium for our kid's school soon and eventually add them to my current vivarium once we move the snake out.