I'm in lockdown and chicks are set to hatch tomorrow. I filled both pots, per Brinsea's instructions, but the hygrometer has only been reading at around 62% humidity. My understanding is that 70% is better in order to keep the membranes from drying out. Should I add a sponge (or something along those lines) to boost humidity? Of course, I have to go to work in an hour and won't be here all day to monitor. Any thoughts? Thanks!