Thank you again!
I had no idea about the formaldehyde! I've seen melamine used so much for reptiles, it didn't even occur to me to research if it off-gasses!
The ventilation on the sides I mentioned, I actually planned to use some metal vents or something along those lines. I like the metal screen piece idea.
Thank you so much! You're help has been invaluable. I'll see if I can source some real wood in a cost effective way. I definitely don't want anything to harm my scale babies.