I changed my setup last night with all the feedback you gave me these past two months. I removed the old vent intake fan in put in a second high powered fan, the same type I use for the charcoal filter but without a filter on it and put a diverter to is blows air from above on just about ever plant below and on the floor level I have two circulating fans, each one faced to cover the blind spots the other can't reach. I raised the light panels 10 inches higher which I was able to do by taking each cable supporting each light panel and instead of hooking it right to the pulley, I loop it over and back to the panel which gave me the extra room I needed as the pulleys were at their limit with no where to go. My new 96x48x80 tent I'm expecting this week will replace my 2x4 tent which is only 60 inches in height. A lot more space to spread my plants out though this time I am going to make sure all unused ports are fully closed. Last time I missed one and my daughters cat kept using it to get inside to take her own samples (the cat, not my kid) .