Originally Posted by LaserKittensGoPewPew
Or do the T5 bulbs only go with the T5 fixtures?
If I can't do that then would the T8 bulbs be alright to veg? I think they're 5000k temp bulbs.
Correct, the t-5 bulbs do not work in any other fixure besides a t-5 fixture.
Yes, you can use a regular t8 for veg, as long as it is the correct spectrum (and 5000k would be okay).