Only have the 1 marshy and the 600 hps running at the moment in big tent the grape crinkle was starting to taco up on me. my temps are not that bad as I'm out in the shed fresh intake all day on crazy days where it 23 24 degrees my tent can get out off control hps goes off and I just run 2 marshys get down to about 27 but night time temps can get down to 19 or in winter with all the lights last year I had 11 degrees turned everything crazy colours. thats why I got back into soil it's stress free I hate trying to battle the heat