tony wrote:
I have in the last 6 months moved some old onc. that have grown slowly but,
not bloomed in over 15yrs. under a metal halide fixture at work 400w. The
plants have taken off. My question is about the new growth. It is leaf after
leaf like a phal. some are 15 to 20 sets high but no bulbs. Is this normal? ...


It is for what used to be called "equitant oncidiums". These plants
are now in the genus Tolumnia. As you've discovered, they like it
bright.

You should get some nice blooms soon.

J. Del Col