Too much fluorescent light?

[isurus79]

Originally Posted by DTEguy

I think I noticed stunted leaf span on a phal. and on my B. cucullata from very high light (don't have enough experience in growing to confirm that). If my observation is correct than perhaps the phals you saw have larger leaves from less than optimal light which equals to more storage to compensate (or actually more beneficial) for high photosynthetic rate in higher light?

You can burn the Phal pretty easily, but burning the B. cucullata is pretty hard to do.

Originally Posted by DTEguy

I had a B. nodosa about 2 feet away from the light but was turning very purple (about 1000fc for 14 hours).

Wow, that is some intense light!! Now I see why you were worried about the cucullata! lol

Originally Posted by DTEguy

I was also curious if too much anthocyanin would actually result in lower photosynthetic rate.

Alan Koch of Gold Country Orchids talked about this. He said that too much light can inhibit flowering, however when I grew my plants in Hawaii, many of them were in full sun all day and flowered very profusely. I think it really depends on the species.