The data file is HERB.IQ.420, you can import it from a fresh install by going to options -> Backup and then hit the import button. Let me know if you have any troubles locating
Not at all, but any higher than 30c(imho) the plant just falls dormant, and with cuttings in water or soil any temp higher than 25c opens them up to bacteria invasion, not the volume to the cloner as per mine the temp of the water is maintained by the air pump, friction, in most cases held the temp at 22c ...any higher add more water