i set up two fc's about a week ago. i think i had way too many holes drilled to start off. so i taped up most of them, leaving a couple just above the pearlite and at the top. got rid of crappy hygrom. and bought a digital. still can't get rh above 85%. the lids are not "airtight". does that matter? i just put suran wrap over the top and placed the lid back on. temp is fairly steady at 76 degrees. any advice for a newbie. got 10 cakes colonized already in the fc's.