The far red thread
- Thread starter Rahz
- Start date
Abiqua
Well-Known Member
There are a lot who care beyond RIU, labs wouldn't simply exist to trample out terp profile after terp profile if not....I am just pointing out a starting protocol and being conservative in judging results.
The rest I don't really understand and wonder how it pertains? Maybe you could be more succint and explain?
Eliminating variability, yes segretated populations probably help, like most modern breeding programs, except cannabis because of prohibition.
We need to grow thousands if not millions of plants under stress levels of increments of every known factor we can think of....and then maybe we can start coming to a conclusion, imho.....
wietefras
Well-Known Member
If you want to determine minute differences or determine them very precisely, you will need huge tests yes.
However, there are plenty tests you can do yourself in a smaller side by side test. If the difference is big enough you will see it. If no difference is visible then who cares?
You do not need to test millions of parameters to conclude something. For instance, the hypothesis is that a dose of FR light at lights out speeds up the grow by a week. Do you really think you would be unable to test that in a side by side test?
However, there are plenty tests you can do yourself in a smaller side by side test. If the difference is big enough you will see it. If no difference is visible then who cares?
You do not need to test millions of parameters to conclude something. For instance, the hypothesis is that a dose of FR light at lights out speeds up the grow by a week. Do you really think you would be unable to test that in a side by side test?
Just wanted to post an update on my experience with far red. I've used it for the last two grows now, and the first grow I was amazed by how long the pistils were and the general vigor of the buds. This grow I haven't really seen the same long pistils, so I'm not entirely sure what's going on. The first grow was different than usual, no question. Also, I have made the possible mistake of opening the cabinet while far reds were on, in order to put a hot water bottle in there as a diy attempt at temp control. Now, one of the two plants are showing signs of revegging or something, it does that strange thing where it starts growing shoots all over the bud instead of making one compact bud growing upwards. My theory is that the plants react immediately to the far red when I introduce normal light by opening the cab doors, and that the "fr-switch", (can't remember the name), goes into day mode again. Phytochromes, was that it?
Also, from now on I will always wash the harvest in h2o2, cause the fresh, citrusy smell after curing was incredible.
BTW, I grow from the same batch of fem seeds every grow.
Also, from now on I will always wash the harvest in h2o2, cause the fresh, citrusy smell after curing was incredible.
BTW, I grow from the same batch of fem seeds every grow.
captainmorgan
Well-Known Member
660 nm light will change the phytochrome state back if you open the door, so the plant might be trying to go back into veg if it's not getting enough dark.
what do you think of this: http://www.tme.eu/en/details/osr9xae3e1e/infrared-leds/optosupply/
could it work?
could it work?
Icemud420
Well-Known Member
Hey all, just finished up a grow testing out 730nm Far Red for flower triggering (15mins on after lights off) and it worked.
I harvested on day 55 (*from the flip) and I have never harvested that early, almost always I harvest around day 63-68 on average and my indicator is cloudy trichomes.
So just as others have mentioned, I reduced my flowering time by about 1 week, and it seems to me that no weight was sacrificed which I will know in about a week and a half when they are dry.
Anyhow just wanted to report back to you guys that yes, 730nm does in fact work to speed up flowering. I also had 7 different strains/cultivars running ranging from indica dom, sativa doms and hybrids and all seemed to finish up right at the same time which also was odd.
I harvested on day 55 (*from the flip) and I have never harvested that early, almost always I harvest around day 63-68 on average and my indicator is cloudy trichomes.
So just as others have mentioned, I reduced my flowering time by about 1 week, and it seems to me that no weight was sacrificed which I will know in about a week and a half when they are dry.
Anyhow just wanted to report back to you guys that yes, 730nm does in fact work to speed up flowering. I also had 7 different strains/cultivars running ranging from indica dom, sativa doms and hybrids and all seemed to finish up right at the same time which also was odd.
MrTwist1
Well-Known Member
Boom! Welcome to the club
captainmorgan
Well-Known Member
You can also run your lights longer in flower to increase yield, some strains will do up to 14/10 just fine while using 730 nm after lights out.
Hybridway
Well-Known Member
Nice! Please don't forget to let us know your thoughts on yield after weigh in. That 730 puts em to bed for a good nights sleep, gaining hours, therefore, like Captian said, should be able to extend lights on a bit.
Good to here confirmation the early cut. If yields aren't thought to be sacrificed, I may try this too. Been wanting to for awhile.
Thanks! Blessed Harvest.
captainmorgan
Well-Known Member
I've been using 730 nm for years and did so to increase yield with a longer schedule, discovered the shorter flower time along the way.
HydoDan
Well-Known Member
I'm running 6 3590s @ 50 watts over three plants... I've been studying far red all day.. Can't really find how much I need..
Any recommendations would be appreciated.. Thanks ...... 10% or 30 watts?
captainmorgan
Well-Known Member
When using it as a trigger a little goes a long way, 10 watts can cover a 8x8 area.
HydoDan
Well-Known Member
As soon as my QB gets here I'm going to rebuild my cob light.. I have a couple citizen 1812s @ 54 I'm adding and was thinking about adding some of these... http://www.rapidled.com/solderless-cree-xp-e-far-red-led/.... Anybody try far red
12 hrs on all thru flower? Or just as a trigger at lights out? lights on also? Thanks...
12 hrs on all thru flower? Or just as a trigger at lights out? lights on also? Thanks...
Randomblame
Well-Known Member
Yepp,
together with a few 660's in a 3:1 ratio(3x 656nm + 1x 727nm Osram Oslon SSL120 horti @700mA) per 35w COB(CXB@1050mA).
You should also be able to use both the flower trigger at lights out + additional red/far red to increase the deepred part of the spectrum and maybe get increased photosynthesis performance from the emerson effect.
But's it's still not fully tested. I only build the light for a friend which was inspired by this spectrum chart.
I think it's a more efficient way to increase R9 and CRI values as using a CRI90 COB's.
together with a few 660's in a 3:1 ratio(3x 656nm + 1x 727nm Osram Oslon SSL120 horti @700mA) per 35w COB(CXB@1050mA).
You should also be able to use both the flower trigger at lights out + additional red/far red to increase the deepred part of the spectrum and maybe get increased photosynthesis performance from the emerson effect.
But's it's still not fully tested. I only build the light for a friend which was inspired by this spectrum chart.
I think it's a more efficient way to increase R9 and CRI values as using a CRI90 COB's.
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MrTwist1
Well-Known Member
I would just run them for 15mins at lights out, but the jury is still out on whether there's much benefit running them through the day. Some report extra stretching but I am not sure.
Icemud420
Well-Known Member
Running them through the day decreases the ratio of Red:Far Red which will cause more stretch.
cdgmoney250
Well-Known Member
I ran 660nm and 730nm during lights on and did NOT notice the stretch everybody keeps talking about. The plants seemed to grow normally or even a tiny bit shorter than I'm used to. The 660 : 730 were in 3:1 ratio and only accounted for about 8% of the total light being created. The rest was a mix of 4000k and 3000k. FWIW.
@HydoDan
Randomblame
Well-Known Member
Yepp, but latest CRI80 vs.CRI90 test clearly show some additional benefits from having higher amounts of red 'n far-red.
Faster flowering an earlier chopping.
And much less losses than one might think because of the efficiency loss of visible light from CRI90 COB's.
Faster flowering an earlier chopping.
And much less losses than one might think because of the efficiency loss of visible light from CRI90 COB's.
cdgmoney250
Well-Known Member
@Randomblame
I actually liked the ratio of light that I used. The plants responded well to the added Red/FR. Seemed to keep the leaves perky and pumping out the chlorophyll.
That being said, if I could chose a spectrum all over again, I would def choose 3000k 90 CRI for flower. I've always been suspicious about the enhanced red from high CRI chips, but the efficiency nazi's scared me back in the day and I chose 3500K 80 CRI for my flower spectrum
.
I did notice about a week faster maturation time running the red lights during lights on.
I actually liked the ratio of light that I used. The plants responded well to the added Red/FR. Seemed to keep the leaves perky and pumping out the chlorophyll.
That being said, if I could chose a spectrum all over again, I would def choose 3000k 90 CRI for flower. I've always been suspicious about the enhanced red from high CRI chips, but the efficiency nazi's scared me back in the day and I chose 3500K 80 CRI for my flower spectrum
. I did notice about a week faster maturation time running the red lights during lights on.