I hear unpopped pop corn is supposed to do well lowering humidity in incubators.
Lowering is not a problem for me I just run a near dry incubation I add only a couple of cc of distilled water every 2 or 3 days raising humidity in the bower is a chore 4 sponges in 4 pans I've had to rewet every day I don't know what the count is .right now close to 20 or more out of 30 something I didn't count when I put them in .what is the humidity around your incubator you need to know that .My incubators run about 20% lower than the air around them the bower about 20% higher except on very hot days. then for some reason they drop about 10% lower .strange huh. well I'm off to set eggs.