Moved my grow from my garage to a closet, where there isn't so much variation in temp. Have 1 seedling that's starting to take off, and some that recently sprouted. I was trying to hit about 65% humidity in there, but cant get above 45%. I've been putting hot water pots inside. I know a humidifier is much more effective, but I'm just scared of mold on the plants and the walls. Advice? Is 45% sufficient?