I meant to say *Add more fire power. Not Had.
Turning your fan off isn’t recommended. (Unless it’s an extra added fan) You want good airflow on your plants in a controlled environment. Even in their night times.
Has adding the extra fan been helping the temperatures? To combat heat, you can either increase the intake of air coming in, as well as increasing your out take of exhaust. That might be able to create a better airflow. If not, then it’s not unheard of, of growing in 30 degree temperatures...