Thank latewood, the clone box is 7ft long, 6ft high. and 4 ft deep, the ballst in the fluro tubes can get quit hot if my exaust fan is stopped, i have inlet vents at bottom of box wi have a oscilating fan on constintley blowing derect to the light , this keeps the temp at 76, but when i stopp the fan rises tramaticaly until i open then it drops to 79 it drops to 7 6when doors
are open, but it works great as when i get the temo so high i omploamate co2 ans it works fer me but i need a flower box with 2x600 watt mh, thanks for your hel, happy growing osirus.