How to reduce fall height
Add enough substrate to bring the floor closer to the lid while keeping ventilation and door function intact. Remove unnecessary rocks or hard ornaments from likely landing zones.
Species and body mass
Large terrestrials such as Grammostola, Brachypelma, Acanthoscurria, Lasiodora and Theraphosa need particular attention because a ruptured abdomen can be life-threatening.
Arboreals are different
Arboreal species are built to use vertical space. Their enclosure should be tall, but still needs secure climbing structure and sensible hardscape placement.
Check
- Distance from substrate surface to lid
- Hard objects under climbing areas
- Substrate depth
- Adult body mass
- Whether the spider is repeatedly climbing