:eyesmoke:if possible sell the 4 inch hood and get a 6in or larger vented hood and get a 350 cfm or larger vortex fan. if not possible home depot has 6in to 4in reducer to vent the light. i would recommend 2 1000 lights in a 7x7 room. i have a 10x10x8 room with 4 1000 hps and 90+ ladies with a...