Hey everybody,air cooled shades are the way to go,you can put a block of dryice in there it will help bring down the temps and give off co2 to boot.You need incoming air thats cooler than whats in the room and exhaust the hot air from the grow tent.A picse of glass 12" above the plants with a fan blowing across the tops of the plants.Above the glass a fan blowing at the light and exhaust fan pulling the hot air out the top of your tent.3 fans and a block of dryice you should have cooler temps. PEACE