Ho ogoun
Quote:
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Originally Posted by ogoun P.S. I read somewhere that many chlorophylls do not use much of the green spectrum (it reflects green), due to it evolving in underwater environments, where the water severely attenuates this spectrum... |
The phycobilins (phycocyanin and phycoerythrin) evolved in blue-green algae and red algae. These pigments are not present in terrestrial plants. But the 'horticultural' lamps would seem to be designed specifically for these pigments.
[rant]Why is it that
every lamp (even the crappy ones) in the aquarium shop has a SPD on the package, but SPD's are difficult to obtain for so-called horticultural lamps? Maybe if we required SPDs as a condition of sale at the hydro shops, we'd be getting better info - and possibly better lamps? [/rant]
I think it's safe to say that actinic fluoros should play a role in our veg rooms.
[edit]Nice post sientbob
, I am still trying to digest the quantum efficiency paper. So far, it seems to provide an explanation for the dramatic difference between yields under optmum and sub-optimal flux density. [/edit]
penguin