HI Aaron, I have been keeping E.andersoni for a few years now, had my first successful breeding this spring. They seem to prefer temps between 5-18 degrees C, offcourse the lower during the winter. They relish earthworms, but also feed on pill bugs for me. They seem to be hardy but are very shy urodeles. I keep my individuals in a 110 gallon ( 60 * 24* 24) with ferns and moss, with layers of flat limestone. I also use layers of oak leaves piled around the ferns, which they seem to enjoy hiding in as well. Humidity wise I would suggest relatively high, but the terrarium should not be saturated. I have a misting system which sprays the enclosure twice weekly for 5min but the micro climate created by the ferns, moss ect.. allows the humidity to remain high. Thtey receive fullspectrum lighting (more for the plants) with a plastic mesh lid. I can send pics if you wish, just haven't figured it out for here. As for cb E.andersoni come fall I will donating a pair to caudata.org for auction, after the auction I will be selling some cb juvies.
Craig