well, this is a pretty basic setup. What kind of info do you want? I may be able to just tell you what to do.

What kind of equipment do you have? PH Pen? PPM Meter? The bigger the light the better so go with a 600W HPS. Have you ever grown hydro before? I am assuming you have grown in dirt? Are the plants girls? What is the grow space like? How much are you trying to produce weight wise? Give me this info and I am sure i can help you along.