Advertisement @boina interesting, but it's really the stagnant air that does it ime. I kept my first Avic very humid as a beginner, it was in a high vent exo tera cage however, so it survived and is doing fine. It had the humidity I would keep a Lampropelma or Theraphosa at. But the vent saved the day. OP, sorry for your loss. Avicularia are one of my favorite genera and it always sucks to see someone lose one. Avoid pet store advice in the future, and online care sheets. They are just as hardy as other tarantulas when set up properly. High vent and some source of water is really all they need. It depends where you're from when it comes to dealers. It's illegal to send spiders to different countries without a proper lisence. With a screen lid, that cage will work for Avics. But modifying it for a terrestrial will take a bit of work.