Now ist's too late for boiling water. The humidity dome I am using has small sindows on top which I keep open for good aeration. Soil is moist, but not wet - there is much less condensate on the dome than in your photo. I was planning to slightly mist the soil with a handsprayer this weekend. Would chamomile tea help against the surface mold or would the cinnamon do? (In fact the reason for that mold seem to be the flower remnants in my seed mix... ) or will the seedlings grow on/in the mold without being harmed and there is nothing to worry about?