Plenum spaces provide two problems if there is ever a fire. First, by necessity plenum spaces are loaded with fresh oxygen. A small, smoldering fire can really take off if it breaks into the plenum space. The second issue is that the air in the plenum space is forced throughout the whole building.
An adult could survive 2 to 3 days without food as long as they have water. You must get some water into him at the very least! With chameleons, they are rather picky about how they eat and drink.ame with food. Once he sees the crickets hopping around and climbing on the branches, that's when he'll get excited and start hunting. Chameleons are very shy at first, so once you offer food and water, I suggest you step away and watch him from around a corner.
The size of the enclosure that you have for your 6-8 week old chameleon, and the size of the enclosure that you will have for your adult chameleon will be significantly different (enclosure sizes vary between species). Typically, a 6-8 week old chameleon can be housed in a 25-35 gallon reptarium (see housing).