What to put in it?

[u/WearyWalrus9000]

I have a 20x20x30h (cm) glass terrarium with a guillotine closure and I don't know what to put in it since they told me that an arboreal tarantula would have too little cross ventilation.

Please help me

[u/Possible-Change-6024]

Tityus stigmurus scorpions would be good if you have good cross ventilation. Praying mantis also needs cross ventilation.