Im also using 2 1000w hps in a 4x8 tent haha i always go big..as of now i am building my next grow room 12x12, 9' cealings 6 1000w hps lights i think my cuz is giving me a 3 ton split AC but could be a 5 i forget lol also sealed grow room with co2 thats my second grow set up lolol