I cannot speak for the 75's, but I (and several others) have noted that the
50's give plants a reddish "tanned" look, suggesting improved PAR.

--

Ray Barkalow - First Rays Orchids - www.firstrays.com
Plants, Supplies, Artwork, Books and Lots of Free Info!


"sandra" wrote in message
ups.com...
Hi Everyone,
I was wondering, how efficient are the chroma day light type bulbs at
growing orchids?
I've been using GE plant and aquarium, but for some of my hight light
phals it's not enough, I'm thinking of using a mixture of both.
Anyone have any ideas or comments
Thanks
-Sandra