For vertical? Nah 1 foot walk way and lights in between plants... Look up the zip grow towers same concept..I'm assuming that the lights are panels and can be closer than 6in if need be. But it makes sense. Light don't have to travel a far way to ge to the canopy. Of course you can spread it out but there's not much of a benifit in that. Maybe it would be closer to 6x than 8...
I'll have to check that out next summer, now it's at 850PPFD. But I consider this winter
So Where The Picture Of This Light That You Copied From Others And Claiming As Your Own Design. I Do Believe The 4 Cob Per Bar Design Was Already Done Way Before You Joined In 2011
Here is the problem i have with comparing "sun" values of PPF not ppfd.....Weather!!
muuwa--hahahha .................... Silly Earthlings...I keed I keed......
Thats what I was originally thinking lol
I had to look up the spaghetti Slimer Davinci?, yes, my concept is older than a tweet kids. Hell wiki might be too new for a definition...ooh time.
That is a real davinci too , true story bro lol
come on brosef-ski-johnson. you should read my profile. I am the original cookie monster nihilist, no joke
I found what I wanted in another thread. Someone posted this from a Citizen pdf. As you can see, the 5000k has a slight advantage over the warmer whites in PAR per watt, though actually it's only about 5% at most. Still, since it is the most efficient at delivering PAR and is also closest to the CCT of sunlight at noon, might as well use that one. The sun is about 5500k from what I've read. The higher CCTs are said to give frostier buds anyway and shorter plants. Doesn't seem to be a downside really.
I don't think it actually matters much what the exact spectrum is, just the total PAR. For instance, I've read that plant growth increases with more blue up to 50%, and none of the white COBs have over 50% blue. I think you only need enough red to activate the phytochrome based flowering system. In fact, I've seen experiments where you can use pure blue as long as you also run some pure red for a few minutes after the blue is turned off. With pure blue the flowering is prevented, at least in the plants they were using, presumably it's similar with weed. I've even seen experiments where they grew vegetative plants with pure red, blue and green light and blue always comes out ahead in dry weight. Surprisingly, with pure green light they only grew a little less than blue or red, but it was always the least of the three.
There's also a point in the day during full Sun where plants tend to wilt to minimize Sun exposure. Avoiding that seems like a good idea. I'm not sure where cannabis lands in all that but my pepper plants are not happy in the Summer with full Sun, zone 7/8.Here is the problem i have with comparing "sun" values of PPF not ppfd.....Weather!!
Is it assumed or taken into account? Is the 2200+ reading with Zero humidity, no wind and low albedo and at sea level? Outdoor PPF is MUCH MUCH different than an indoor reading, mainly just due to factors outside of our puny control....unless you are a pantheist maybe
Yeah I guess 5000k is a little too low on red. I'll just use them in my veg chamber because it is very short. Bluer spectrums do seem to keep plants shorter. I got 2700k ones for the flowering chamber. The main light is 4000k so the 2700k should improve it a little, probably making it around 3000-3500k.
