If you have absolutely no idea what you're doing you might want to start with
this thread or others in Newbie Central. You need at least 30 watts per square foot or more and one of a proper horticultural spectrum is highly recommended (metal halide, high pressure sodium,high output fluorescent, etc.)
I haven't heard much positive about the LEDs except for in the advertisements for them.
I really don't feel like thinking at the moment. I don't know what kind of soil you're in or how old the plant is. Are the plants flowering? If not you'll need more than just the bloom. Well, even if they are you'll need more than the bloom because EJ Bloom has no N at all. You should feed with Grow and Bloom if they need it. If the bottom leaves are beginning to go pale yellow, they need some Grow fertilizer with nitrogen. At the beginning of flower you can use 1 tbs Earthjuice Grow + 1/2 tbs Bloom and increase the amount of bloom each subsequent feeding, while decreasing the amount of Grow you give them.
You'll need dolomite limestone and something to check pH with. Many people will recommend aerating the Earth Juice nutrients, it will lessen the impact feedings will have on soil pH (as will dolomite lime).
Good luck.