You shouldn’t put HPS grow lights above your plants by more than 30 بوصات (76 سم). Medium-sized lights like 600w’s can be placed about 25″ (64سم) above the plants without losing vigor, while smaller 400w lights can only be placed about 20″ (~51cm) away from the plants.
أكثر: 7 أسباب التبديل من HPS إلى مصابيح LED 2023



