| Arlene - what kind of light meter are you using? Is this a $20 unit or $100 unit? Just wondering about accuracy? Will be interested to see what your camera says! You are using the same type tubes I am. When I put my sensor right up against the center of the tube with NO reflection I get 1000 footcandles.
DDS - light levels of plants will vary a little depending upon who you ask, but I've noted the following separation used by some.
Judy - looks like we are working on much the same principle of putting plants out for the nice weather and then moving in for the winter. I've noticed the same positive results as you. I have not put my paphs and phals outside yet though as they continue to do wonderfully under my lights indoors - not sure I'd get any advantage by moving them - other than I could turn off my lights for awhile.
mike
1000-1500 fc - low light orchids
1500-3000 fc - medium light orchids
3000-4500 fc - high light orchids |