According to John Ott the light we get through transparent plastics and
all glass (nearly all) is deficient in some respects. Some of the flowers
he tried to do his time-lapse photos on simply would not proceed to the full
flowering from the bud stage without exposure to light from certain
sources. Some had to have full sunlight, some would flower with light
through plastic but not light through glass and some were opposite in this
way. I think his work caused us to have available the plant light bulbs we
can now buy. And since we spend a lot of time in cars with windows up and
we wear glasses and contacts while outside and the eyes use light to set
some internal clocks (so I've read), and in many other ways we are perhaps
light deprived---so many questions and so few carved in stone answers.
Jonathan V. Wright had at least one case where a female could only regulate
her monthly cycle when she exposed herself to moonlight sufficiently!! And
I've read that we need to be careful about taking Vit. A while supplementing
with D3 to avoid toxicity. But for my part the jury is in on Vit. D3 and
supplementation is definitely in order. That www.vitamindcouncil.com site
is really good, imho. pj
