Quote:
Originally Posted by justinl
as fas as I understand, it's not enough to just talk about red yellow blue etc light. When it comes to photosynthesis it's all about PAR (photosynthetically active radiation). Different processes involved in growth are triggered by specific wavelengths as well. For example in "sun plants" vertical growth is increased with greater far red to red light exposure. Absorption of the different wavelengths mediates phytochrome activity (which is associated with vertical growth, flowering, fruiting and a bunch of other things), but not photosynthesis.
On the topic of equipment, little of reefing equipment is novel. For example, plant growers were using halides and T5s long before we were.
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Photosynthetically
available radiation.
Buuut anyways, yes, interesting note about the phytochrome mediation. That makes more sense.