I've been running T5s for aver a year now with great results, I have a 4 bulb and an 8 bulb. The 8 was on top and the 4 bulb was on it's side against a wall. I've brought my gals from seed to harvest under this set-up, changing bulb color range when I change the cycles. My plant tops are about 1"-1.5" from the top bulbs and I have a fan that blows air along those bulbs so I can practically grow up to the bulb (but I would not recommend it)
The more bulbs you have the better the results you get.
Hope this helps.
[quote name='dddsba']Hello - I'm researching lighting...I'm a patient in CA and want to set up a grow room. Due to the age of the building I rent in (100 years old) I want to keep my lights cool for safety, although I could see myself evolving to a HPS in the future...for right now, my task is to get 3 plants to maturity and I'd like to start with a T5 system to start.
1) Can I get plants from seedling to maturity using a rotation of different strength lights (i.e., 6500k bulbs for vegging and 3000k bulbs for flowering)?
2) If so, how many bulbs should be used for this amount of plant material (3 seedlings). Should I get a fixture that holds 4 or 8 bulbs?
3) I don't have strains chosen yet, but smaller-bushier ones have been recommended for this lighting system...supplement flowering w/ CFL's? If so, any recommendations on strength and models.
YOU ARE A T5 PRO, I could really use your input...thanks very much!