I use Tupperware tubs with the lids and that keeps the humidity around 94%.... 60% is a good bit low in my opinion. I open them every 2 days to get the excess humidity out. Also if your bator humidity is too low in general you can always put a bowl of water or two in the bottom. This will bump the humidity up for you. Also I just set the eggs on the vermiculite and snuggle them down into it just a little bit.. Hope that helps.