Will this cause more stretch moe through lights on..the reason I ask is that I ran far red pucks x2. 6watt ea after lights out for 15 mins or so .trying to speed up bud onset..it did speed them up 4 day-5days quicker but I was getting 2’ stretch from 1’ without..I had to stop using them as I was losing canopy to light room..
Hey Max,
Check out this for some easily understandable explanations
Learn more about this less-talked about end of the light spectrum can impact your crop.
californialightworks.com
The ratio of red to far red is important. You would have to look at what 12W FR vs X watts of Red (whatever you were doing with your fixture) was signaling to the plant. Also it means different things at different stages of plant growth.
In general, Far Red will produce a phytochrome response that signals to the plant it is in shade and to stretch to get to direct sunlight. I think that is what you were describing.
None of this has anything to do with the Emerson Effect, which is yet another use for Far Red. This gets into quantum physics and how a single photon can be in 2 places at once, and how two wavelengths together (red and far red) increase the quantum yield of photosynthesis. It's totally wild, and has been well understood for a long time, being first discovered in 1957. If you like quantum physics which can be pretty mind melting, I'd read up on it.