It will work just not as well as a Metal Halide HID. They have different spectrums and will therefore affect the plant in different ways.

Distance away should be such that you can hold your hand under the light with NO discomfort.
blink_inc Reviewed by blink_inc on . what is the distance for hps and young sprouts i have 150w hps i have it about 25 inches above the plants im running the light in a 18/6 will a hps work for veg groth or is it only for flowering i hope to have pic up if i can find my camera Rating: 5