http://www.eyehortilux.com/products/high-pressure-sodium#shps
HORTILUX HPS lamps are designed with enough violet, blue, and green spectrum to be used as a standalone light source throughout all phases of plant production making them a true multitasker for your HPS system.
This is the 1st time I've been using HPS from start to finish. The MH lamps will keep the girls short and bushy. Then switch to HPS in FLOWER. Since the grow is an autoflower strains, they FLOWER with a "VEG" cycle. The Grape Crinkle will start to show flowering within the 3rd-4th week. Keep them under HPS the whole time kinda makes sense.