For my Becarri's, I needed to increase the humidity in their enclosure, so I went to the drug store and bought a household humidifier, in which the output is at the top of the device. I then took a 3" diameter pvc pipe and extended it up to the top of the enclosure, where an elbow is fitted with screen mesh covering the opening. At first, I was hesitant, because I didn't think the fog would climb as high as my enclosure, but upon hooking it up, I find that it works excellent, even five feet above the actual humidifier. The humidifier cost about thirty dollars at walgreens, it ended up being the best thirty dollars I've spent on my becarri, they love the increased humidity. Along with adding moisture, it also turns my densely foliaged enclosure into a tropical cloud forest. HOpe this is of some help to you. Good Luck- email me for some pics of my setup.
bob mendyk