Hello! I'm a senior in highschool and I am building an incubator and hatching ducklings for my senior project! I've never done anything like this before so I do have a couple of questions. I've made my incubator out of a Styrofoam cooler, and I've installed a 25 watt light bulp, a 12 volt fan, and the raised bottom (which I plan to cover with that rubber Matt stuff you put in your silverware drawer. For this size incubator, how big/ how many ventilation holes do I need? And were should I put them to make sure there is enough air? I've done lots of research on humidity, and Im getting all sorts of answers... I trust you guys a lot more than the general internet! So what humidity should I aim for during days 1-25 and days 26-28? If I use a sponge, do I need to change it every day? So it dose not get bacteria? Do I need a barrier between the lightbulb/fan and the eggs? If so which side should I put the water on, under the light or next to the eggs? Last question I've used a good amount of duct tape, could the chemicals in it hurt the eggs during incubation? Thank you all so much!