How old is your genesis and have you hatched in it? I read lots and lots of reviews and it seems styro bators have a useful life span of about 4-5 years before they start to have problems. My genesis will be 3 this year and so far it has done great, but I never allowed any eggs to hatch in it either, they went in a separate hatcher for that. I was debating getting another genesis because it worked so well for me, but they have "0" resale value, unlike the cabinet bators and that is the main reason I got the sportsman. My genesis ran for 3 months straight the last 2 summers, I'm hoping if I use it only for hatching I can extend that useful lifespan and have a hatcher for many years to come. Probably a dumb question, but have you bleached all the "bleachable" parts good?
I don't know about Zaz ventilating hers, but being that she is in a humid area, she should see the water evaporate at a slower rate, I would think.
I used Clorox to sanitize my hatcher last year and then blamed it for a lost load of eggs, not peas, but .... I think I had too many leftover fumes that killed the eggs. I had seen where someone was using egg crates to hold the hatching eggs so I sanitized them as well. I think the problem was that the paper egg crates did not off gas fast enough and that was that. We now use Tek-trol to sanitize everything, eggs and all. If you use bleach be sure to let it air out well before putting eggs in it.
For comparison on ventilation, my Sportsman has two vents on the back, one of which is plugged, there are three on the right side of which two are plugged. I suspect that Mindy's is the same. Zaz, how many open ports does your unit have open? My Hatch Craft units both have two open vent holes, one high in the back and one low. And yes, I have it six inches from the wall, I hope that is far enough.