Hi, I am completely new to this hobby and I fear I'm in to deep all ready. Originally i was just going to try to find some bearded silkies already hatched. But now I'm thinking of trying to buy some eggs and hatch them myself. Im am starting to look at incubators and I found this one on eBay. So my question is how would I go about controlling the humidity in an incubator like this? http://cgi.ebay.com/BRAND-NEW-HOVA-...253?pt=LH_DefaultDomain_0&hash=item1e59cbdc15.