Wow magoo you are on it bro. My tent was the same with all the airflow the humidity was way down. Still aint up there but its better than it was. I found a fan inside the tent blowing the air around so it circulates more before getting sucked out helped me. But as I said you are on it and got it under controlThe humidity and temps were all over the place at first but I saw the pattern and got it stable. There is a lot of airflow through this tent with such a large fan pulling straight out of the top. It wants to keep the humidity lower. With the humidifier sitting outside one of the lower vent holes...if I closed all other holes it sucked all the mist right in but was still low. The best I could figure was that with that being the only source of incoming air that it was probably going straight to the filter since the sides of the tent were sucking in. So I started opening the zipper and some flaps as well. This caused the humidity to spike up into the high 80s. With more options for air to come in it allowed the humid air to sit in the bottom of the tent. So I started closing some of the airways until I got it steady in the range I wanted. So now I also know how to lower it further when the time comes. This is all with the lights on. I will see today how it it held up with the ports closed and the lights off.