There is nothing wrong w/ t8 bulbs regardless of color temp.I've heard standard T8 bulbs don't grow plants well but what if you get a 6500K T8?
International Carnivorous Plant Society - Indoor Plant LightingTo get 25,000 lux requires 2400 lumens or 25 watts of T8, T5, or T5-HO fluorescent lighting per square foot
This is the spectrum from some of the best quality and most efficient T5-HO fluorescent bulbs for human use. Under these lights object appear the correct color and the lights are very bright. Most of the light is outside the preferred spectrum for plants.
I have a single 18" 15w t8 on my tank and it does fine. I have a 20 tall I will use 2 of them. His issue I think is nutrient orients with gravel only no root tabs no ferts.I could not grow plants worth a hoot with single T8s.
Mind you that was on 20 Tall and 55 gallon tanks.
It was too deep for single T8 fixtures.
I can't see why a 10 couldn't manage however?