Hi all !!! Still new at this & trying to get it right. I'll try to post pics....but not sure if I know how (not good with computers at all). Anyways, I'll try to describe my set-up & problem in detail in case pics don't come out. I have a 2'x4'x6' grow tent with 4-plants (2-OG Kush & 2- Pie Face). I have a 4" Carbon Filter & Fan installed. A 600 watt VivoSun Cool Tube Reflector Light at the top of the tent which I can only use at 250 watt right now. Even at the 400 watt setting the temps reach into low 90's. I only have 1 - 4" inline fan blowing in to cool the light but no ducting on the other end of the light so the hot air blows into the tent as of now. I have 2- 6" inline fans & new 6" duct on it's way so will fix this by the weekend. This is where the questions are....????? The 2 - 6" fans are 240cfm ea. Can I hook 1 fan up on 1 side of the light to blow in & the other fan on the other side of the light to suck the heat out ? My tent is right under my A/C in my room so I was going to duct the intake fan right under it from the top of the tent & the exhaust fan duct to the bottom of the tent & out the hole. Will this work ? Will it get rid of most the heat so I can put my light on 400 watt for Veg. & 600 Watt for Flower? I'm already about 1 1/2 - 2 weeks into Veg. now. Got to get this thing cooler. At 250 watt I'm staying at about 82 Degrees with 47% Humidity which is close to what I want ( I Think ???)...but not sure if I'm getting enough light at 250 Watt. I live in AZ. so I'm in a Very Hot & Dry Climate so Humidity levels are a PITA to keep right. I have a household humidifier running inside the tent 24/7 to try to bring the humidity up. It has helped as I was only at 20% - 25% without it. I also Run 2-Clip on Fans & 4- 24Watt LED's for side lighting & I turn my plants 1/4 turn every day so everything gets there turn at the LED's. Not sure if this helps...but I doubt it could hurt. Anyways, I have a slight problem with the LED's. 2- of my plants got 1- Burnt leave each. What is the proper distance to put these LED's away from the plants ? I must be too close at about 16" - 18" away. Any tips on Lighting / Cooling / Humidity would be of great help. Weezard & Dutch Pimp ....please feel free to add your 2 cents...please !!! I've read a lot of your posts & you guys really seem to know your chit !!! OK...I'll try to add pics now. Says my file is too large. Not sure how to fix that so have to wait for my teenage son to get up....LOL. I'll try to add pics later.