I just purchased a 1000 watt bulb. I planned on doing a 4x4, 62 watts per square foot grow box my first time. The height of the box I'm unsure of. I'm thinking 6 ft? I purchased a fantech FX 6XL 392 CFM fan to deal with heat for my lamp but I'm not sure how well they work (for the price I'm going to have to assume they work great). I plan on pushing all exhaust into my attic elminating any warm air from reentering the grow environment. Now my question is, can I bring cold air in from my AC through ducts i run directly into the grow box? I like to keep the house around 72 obviously but I have a feeling it will be hard to regulate the temp in the box based on the temp of my house since I'm trying to keep them completely seperate. Is this worth while? I've also seen little swamp coolers that claim a 12 degree difference... Whats a good general temp for a grow box of my size and lamp?