I am creating a closet Vertical grow. It will be 3 tier and starting out with 4 plants. I am getting a 600w hps light and using a clay medium. Also will be getting a 250gph water pump with bypass to keep air in the water. The only thing i have no idea about are the nutrients. With have been an outdoor grower i got all of that from soil so i would like to know exactly what i need to put into the water. also i hear of alot of people skipping veg periods and going right too flowering. any insight on that as well?