This is my second set in my LG. This time the chicks developed but still not hatch. For the first 18 days the humidity stayed around 45% and temps stayed between 99 & 100. The last three days the temps stayed right, but I could only get the humidity into the 60's. Could this be the problem? I have a cup with a sponge in it also, just cant get the humidity higher. I am new to this and still learning. Any help would be great.