Hi Steve, I remember back when I first started growing, there was a list
that was put out by
the Orange County Branch Cymbidium Society of America.
It had most of the popular orchids & listed their required Foot Candles
of light.
Vandas........ 2500 to 4000
Cattleya...... 2000 to 3500
Oncidiums....2000 to 4000
These were for growing in a g/h.
I also remember my light metre having a switch for florescents?
I will try to find the list if you are interested. It had other pertinant
info like
Fert mixture, potting mix, best time to repot etc.
Cheers Wendy
"Steve" wrote in message
...
My light meter is reading 4,000 - 5,000 at plant level
and 2000 - 3000 at shelve level....
On a 12 hour a day timer

I have a mix of orchids on that shelve:
Oncidiums, Vandas, Zygo's, and few young cross...

Is this too much light?

Some leaves of some were turn a little yellow, so those got
moved to the ends of the shelves.

Is there any good web sites that maintains a light of orchids and
how much light is right for them?

Thank you
Steve