Excess of light without excess of heat

[DavTom]

Thanks Ray. Basically you are saying that with less heat (i.e., due to frequencies outside the PAR interval) the plant can get a bit more light within the PAR region, but not much more. OK, got it.

Yes, of course, PAR without specifying the time exposure does not mean anything (that's why the assumption was considering as example a 12 hour exposure).

Dav