google "hydroponics" and begin to browse the web..

-many people prefer digital ballasts....

-600 watt bulbs are the most efficient...

-if you are going to use HPS lighting, yo will most likely need to purchase an exhaust fan (one inline fan with ducting).. you can look at exhaust fans at the hydro online stores too. it is important to take the heat away from your plant and grow area

iloveyou

learn about pH-ing water if you are going to grow.. this is the most imortant thing you can learn!!