I am having problems with my Brinsea Oct 20 (not the advance) . I know this has probably been discussed several times but I am in lockdown right now and need some help. Day 18 was fine for most of the day then the humidity started dropping I have a little sponge under the vent where I am adding water with a straw but I am constantly having to monitor it . When I got up at 3 am the humidity was down to 49% I am hoping that didnt ruin the eggs . So any thoughts or idea would be greatly appreciate . I have more eggs to go into lock down next week keeping my finfers crossed for this one . Also I have to hydrometers in there both are running percentages off from each other I dont know which one to trust .Can someone please recommend a good one that they have used and works well .