Today's lockdown and I can't seem to get the humidity up. I'm not sure if it's my hygrometer as I've only been using the one that is on the incubator. The eggs have developed fine and have good looking air cells. It's read around 48% the whole time with no water in it. Today I put in water and then a sponge. Now it's reading 43%? Should I worry about it if I have water and a sponge in it or should I try to find a new hygrometer tomorrow?