hi all i got 2 hps 150 watt lights in my flowering room at the moment would it be best to run both hps or 1 hps and 1 mh any help on this would be great
thanks
acidclown
If you're worried about heat, you could run 1 of each as metal halides are slightly cooler than HPS bulbs, but If not, dual HPS bulbs would be better for flowering as they have more of the red spectrum.