I have a question about grow lights.

My local Home Depot is selling a T8, reflective, 4' fluorescent light but only carries 4' T12 aquarium/plant bulbs. I am looking for T8 grow bulbs.

Can I use any fluorescant bulb for general growing as long as the light heat spectrum is the right temperture? What is the right temperture (2700, 3000, 6500)?

If anyone can point me in the right direction for this, I would appriciate it.

JohnW