lay your hand on your plant tops, with the back of your hand facing the light ... judge the heat that way ... :smokin:
the image reaper Reviewed by the image reaper on . hps 250 distance? how far above the plants would a 250w hps need to be?. It is quite a cold area, about 18 degrees celcius which is about 65 degrees farenheit. I have just changed from fluoros and cfls to hps. anyone know? Rating: 5