This year I've mixed vermiculite and perlite about 1:1 and then added water. Will add a little water to each box if it seems too dry. How have others set up eggs? The ECCM would add to work at not letting eggs get too warm. A few years ago many breeders kept getting some hatchlings with kinks and coming out in 90 days or so because incubating temps were too high. Temps in the mid-70's will give larger perfect hatchlings after around 120 days.