Obviously not enough
Just airflow from pole fan, passive intake, 4" fan/filter for exhaust. Temps will pretty much vary from 82-84 with lights on, to 68-70 with the lights off. I am personally okay with that swing, though I am sure it may be slightly beneficial to move the lights on temps to closer to 78ish.
Humidity during lights on isn't soo much a problem (38-50%) with the lights on most of the time, but the lights off humidity, with the lower temps jumps up, and the humidity in my house has been higher recently (spiking @ 60-70% right now). I have room to improve, but for a learning curve grow, I am okay 'taking chances' and trying 'extremes'