Lighting system purchase?

[gryffin]

Hi all:

I am looking to but a decent light to raise my seedlings. I was considering two 2 ft Jump Start systems since I have an old fish tank stand that would work well for them.

However, after looking at Gardeners Supply's website, I realized that the lights I was considering have only one T5 bulb each. The Gardeners Supply lights have two T5 bulbs in the strip.

In the past when I started seeds, I used shop lights that I mounted on a home-built wood stand with a couple of levels. I don't think I have the space to do something similar- I need to use something more compact.

Is one T5 bulb sufficient? Are two necessary, or are they overkill?

Thanks!