Oh if it helps my grow room is 0.6m x 0.84m x 2m with a Philips SWF230 floodlight running a 150w SON-T Master PIA lamp mounted approx 0.75 m above the top of my pots. I have a fan circulating air. Air temp around my plants is between 68 - 85 but can go up to 87 - 89.