When I was taking my "egg" photos for the JAKA article last year, I watched the gestation of my P-82 carefully and they were consistently 18 days at 70-72 degrees. If they don't hatch within 20 days, I would recommend a force hatching method of one sort or another. To join the AKA see http://www.aka.org/pages/join.html Archives are at http://fins.actwin.com/killietalk/