Ok so this is what ive started. I built a tent today out of 3/4 in pvc and poly plastic. The tent is 6x6x7 and has a foot of open space between it and the ceiling. I positioned the tent in my spare room directly under the central ac vent. I will be running 1 1000 watt hps air cooled hood for flower. I have a 6 inch inline fan 430cfm and not sure if i should place it in the tent pushing air out or place the fan outside the tent pushing fresh air in. Im worried about heat. I keep my house 70 degrees 24/7. I will also have 1 oscilating fan and 1 on the floor blowing at the plants. How should i set up my fan to have cooler temps? Please ur guy's advice is greatly appreciated.