Artificial lighting
 

I am kinda of a newbe to the Bonsai scene, I've been growing trees for ten
years now. I have four nice trees, two bald cypress, one water tupelo, and a
beech tree. my question is what kind of artificial lighting works best? I have
been trying to grow a bald cypress indoors in one of my aquariums and I can't
seem to get them to grow under metal halides. I grow cypess trees in my
aquariums in my greenhouse with no problem but how can I get them to grow with
artificial lighting?