some people use HPS threw the whole process, i would say get cfl or Metal Halide for VEG and then High Pressure Sodium for Flowering.
u want more or a blue spectrum for Veg and Red for Flowering.
icebelowfreeze Reviewed by icebelowfreeze on . Best Light for Flowering? What is everyones preference as far as flowering lights go? I was going to use a 400w HPS light for vegetation and haven't decided on flowering lights yet. Rating: 5