Also, for vegging a 4ft T5 fixture should be fine, but make sure that the lights are as close to the plant as possible without touching the plants to the light since the intensity of CFL lights are diminished to begin with, but effective frequencies of light for growing. In terms of your nutrients, if budget is a concern and you still want to see effective results, use a simple formula with consistently stable yields: 3 part General Hydroponics in addition to a vitamin additive such as B-52 by Advanced nutrients. These 2 different nutrients should be sufficient for your veg stage, and then once you move into your flowering, switch to an HPS bulb and use Bud Candy by advanced nutrients which is a B-vitamin additive like B-52, but contains many other trace elements which are important for increasing the terpenoid concentration in your plant. (terpenoids are responsible for the aromatic properties of your product)
. Remember to make a new nutrient solution every 10 days because this will keep your solution fresh for the plant and your pH around 5.7: very important not to go over 6.3 or lower than 5.3. Yep btw, a MH or HPS bill will show up on your bill. You can calculate it by figuring out how much your electricity costs per kilo watt hour and then finding an online calculator that tells you how much your bill will be increased by if you run the light for x hours a day