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Girls Gone Wild - Cannabis Flowering with Supplemental Red Lighting

Driver77 said:
They have them...I only see in combination with the red now though.
www.ebay.com

2025 Mars Hydro Adlite,UV IR Blue Fill Light for Indoor Plants,Increase Yield | eBay

Find many great new & used options and get the best deals for 2025 Mars Hydro Adlite,UV IR Blue Fill Light for Indoor Plants,Increase Yield at the best online prices at eBay! Free shipping for many products!
www.ebay.com
Click to expand...
2 minutes too late, a much better price too. I looked but all I saw was the reg Mars stuff without any blues so I bit on the Tarantula booster bars at 5x the cost....heavy sigh
 
moe.red said:
Yeah multiple experiments.

UVA tended to bring out colors like the purples and tended to color petioles and such. Had pics of a tiger stripe petiole where it was obvious that the shaded parts were green and the parts that got uva were purple. Anthocyanin response.

UVB was tougher on the plants. Reduced harvest weight. Could not prove or disprove more frost because of mistakes made in the setup. I put pins in the buds and took pics from the same spot over flower but the buds swallowed the pins so I lost my reference point. My gut told me there was no significant impact I just could not prove it.

UVB seemed to make the plant finish faster but was damaging.

There was a correlation with higher CBG production but not enough data to prove causation

Under uvb I got measurable THCv on white widow that never expressed it without.

All that said I decided it would take 10+ experiments to find the sweet spot of power position and timing for uvb and didn’t think it was worth it. Went to the next shiny object.

UVA seemed like it didn’t really help or hurt but again more testing would be needed to say for sure. I was only using (2) 30 watt bars in a 4x4 space lots of room to increase power there and see what happens.

Did not fuck with uvc and don’t plan to.
Click to expand...
What time did you have the UVA on? 10/50 or 15/45 (minutes) or constant? Wondering if I can turn my cycle time up and what signs to look for if too much
 
When I couldn't time my uva and ir separate I just ran them for 2hrs on 1hr off. If the plants started pointing at the supplements I backed it off a little.
I noticed a need for more magnesium with the uva.
 
moe.red said:
Well, this was years ago, going from memory.

UVA was like 8 hours during flower. UVB was only 2 hours or less. Middle of lights on.
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Ok, I think I will bump mine up tonight
 
I'm thoroughly enjoying reading all of the incredibly detailed info @MiGrampa is sharing with these experiments. Ditto for all of the what-ifs. knowledge, links and thoughts shared by everyone commenting. This is a great thread that really gets the gears in the old noggin' turning.
 
Got an email ad from Migro talking about far red in flower....linked to this page.....they're not a fan.
migrolight.com

DO NOT use Far Red for flowering weed

There is some evidence that adding some far red to the grow light spectrum will increase yield very slightly. However the corresponding reduction in cannabinoids and terpenes means a much lower quality of harvest in terms of potency and aroma.
migrolight.com migrolight.com
Sorry I didn't see someone had already linked this.
They used 25% far red...
 
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Driver77 said:
Got an email ad from Migro talking about far red in flower....linked to this page.....they're not a fan.
migrolight.com

DO NOT use Far Red for flowering weed

There is some evidence that adding some far red to the grow light spectrum will increase yield very slightly. However the corresponding reduction in cannabinoids and terpenes means a much lower quality of harvest in terms of potency and aroma.
migrolight.com migrolight.com
Sorry I didn't see someone had already linked this.
They used 25% far red...
Click to expand...
Interesting, but what do they consider high use far red? full time running with lights on intermingled with the other spectrums?. My use is 15 min at lights out and that is enough to effect my plants they just get a sunset. I would think that's low use and shouldn't have too much effects on terpene's. I don't notice any loss from my last crop, smells good taste good
 
Pipecarver said:
Interesting, but what do they consider high use far red? full time running with lights on intermingled with the other spectrums?. My use is 15 min at lights out and that is enough to effect my plants they just get a sunset. I would think that's low use and shouldn't have too much effects on terpene's. I don't notice any loss from my last crop, smells good taste good
Click to expand...
Yes, they are talking about the Emerson effect which basically is turbo charging photosynthesis. It's proven that the the use of far red along with other spectrums can produce more sugar. Gets weird in the quantum mechanics realm fast where photons can be in 2 places at one time.

The side effects of using all day FR seem to all be detrimental tho even if yield is increased slightly. Morphology, potency, etc all negatively impacted.

For you pipe, the idea of putting the plants to sleep faster with far red is in fact also proven. That said, the only real benefit to doing that is allowing for a higher DLI by changing from 12:12 to a slightly longer on time for your lights without risk of reveg or hermies. It has a direct impact on the hormones that control the "sleep" cycle in plants. There is a specific hormone that switches back and forth in state based on light. Far red switches that hormone faster at lights out, meaning you can potentially run main lights longer producing more photosynthesis.
 
Pipecarver said:
Interesting, but what do they consider high use far red? full time running with lights on intermingled with the other spectrums?. My use is 15 min at lights out and that is enough to effect my plants they just get a sunset. I would think that's low use and shouldn't have too much effects on terpene's. I don't notice any loss from my last crop, smells good taste good
Click to expand...
By the looks of the plant they show they ran ir only!
I run mine like you now but I did run it for hours with the old style uva/ir combination bars and never noticed a drop off in potency....they are weaker lights though...30w uva and only 15w ir I think.
They claimed 25% far red which is a lot more than we run.
 
moe.red said:
Yes, they are talking about the Emerson effect which basically is turbo charging photosynthesis. It's proven that the the use of far red along with other spectrums can produce more sugar. Gets weird in the quantum mechanics realm fast where photons can be in 2 places at one time.

The side effects of using all day FR seem to all be detrimental tho even if yield is increased slightly. Morphology, potency, etc all negatively impacted.

For you pipe, the idea of putting the plants to sleep faster with far red is in fact also proven. That said, the only real benefit to doing that is allowing for a higher DLI by changing from 12:12 to a slightly longer on time for your lights without risk of reveg or hermies. It has a direct impact on the hormones that control the "sleep" cycle in plants. There is a specific hormone that switches back and forth in state based on light. Far red switches that hormone faster at lights out, meaning you can potentially run main lights longer producing more photosynthesis.
Click to expand...
I tried that a few times and a couple of grows back,I ran 15 min at lights out and progressively moved to longer lights on. I went 12/12 - 12.5/11.5 - 13-11 -14-10 and finished in 10 weeks but I normally finish in 11 so who knows if it did anything really its all subjective at this point.

I've just noticed healthier looking plants when I used the reds in veg and into flower with just the 15 min at lights out but the stretch was too much to handle.

I've ordered the blue 440nm lights from Tarantula, should be here next week. I'd like to run the blue and red in veg along with my reg lights to get the benefit of the reds without all the stretching
 
I found this inexpensive par meter that breaks down red, green, and blue.
Doesn't do far red or uva though...but found this for that
It would make it possible to get ratios dialed in pretty damn close....I have the old style of the first one but it doesn't separate the spectrum....Claude will be very helpful with this!
 
Driver77 said:
I found this inexpensive par meter that breaks down red, green, and blue.
Doesn't do far red or uva though...but found this for that
It would make it possible to get ratios dialed in pretty damn close....I have the old style of the first one but it doesn't separate the spectrum....Claude will be very helpful with this!
Click to expand...
I added both to my Amazon cart. I'm going to apply the 24 hr rule though. The 24 hr rule means I will think about it for a day to decide if I actually want to make the purchase.

Thanks for the tip though. I did some more reading about far red during flowering and its impact on over-all cannabinoids and decided to play it safe. I changed the timing on the far reds to 20 minutes before lights on and turning off right after the main lights come on and then turning it back on at lights out and running it for a half hr after the main light goes off. I don't want to sacrifice cannabinoids for the sake of an experiment. lol
 
MiGrampa said:
I added both to my Amazon cart. I'm going to apply the 24 hr rule though. The 24 hr rule means I will think about it for a day to decide if I actually want to make the purchase.

Thanks for the tip though. I did some more reading about far red during flowering and its impact on over-all cannabinoids and decided to play it safe. I changed the timing on the far reds to 20 minutes before lights on and turning off right after the main lights come on and then turning it back on at lights out and running it for a half hr after the main light goes off. I don't want to sacrifice cannabinoids for the sake of an experiment. lol
Click to expand...
That's a great idea! Be nice to be mandatory for my wife.......I'm trying to see if I can get a firmware update for my old one....probably not but worth a try.

Yeah me too...I'm just 15mins before and after main and 15 more with main for 60mins total of ir/far red. I cut my red back also for a couple hours midday since I had to turn the main down to 65% to avoid cooking the Glue Sniffers. I'm curious to see what the ratios are actually like.

You have to go on down the rabbit hole and add uva and 660nm red to be able to use your new par meters full potential! lol
 
Driver77 said:
That's a great idea! Be nice to be mandatory for my wife.......I'm trying to see if I can get a firmware update for my old one....probably not but worth a try.

Yeah me too...I'm just 15mins before and after main and 15 more with main for 60mins total of ir/far red. I cut my red back also for a couple hours midday since I had to turn the main down to 65% to avoid cooking the Glue Sniffers. I'm curious to see what the ratios are actually like.

You have to go on down the rabbit hole and add uva and 660nm red to be able to use your new par meters full potential! lol
Click to expand...
I've got a lot of 660 nm reds already in there. I didn't change the timing on those. I have 110 watts of recently added deep reds to go with what came with my lights. I also have 8 660nm/730nm emerson boards in there on the same timer as my main lights.

As for the UV? I have UVA, UVB, and even UVC sources that I could add. (UVC is more of a germicidal light for sterilizing the tent between grows) I am more than likely going to add UVA and UVB for the next run. It would be a lot of work to do right now without moving the plants.
 
MiGrampa said:
I added both to my Amazon cart. I'm going to apply the 24 hr rule though. The 24 hr rule means I will think about it for a day to decide if I actually want to make the purchase.

Thanks for the tip though. I did some more reading about far red during flowering and its impact on over-all cannabinoids and decided to play it safe. I changed the timing on the far reds to 20 minutes before lights on and turning off right after the main lights come on and then turning it back on at lights out and running it for a half hr after the main light goes off. I don't want to sacrifice cannabinoids for the sake of an experiment. lol
Click to expand...
MiGrampa said:
I added both to my Amazon cart. I'm going to apply the 24 hr rule though. The 24 hr rule means I will think about it for a day to decide if I actually want to make the purchase.

Thanks for the tip though. I did some more reading about far red during flowering and its impact on over-all cannabinoids and decided to play it safe. I changed the timing on the far reds to 20 minutes before lights on and turning off right after the main lights come on and then turning it back on at lights out and running it for a half hr after the main light goes off. I don't want to sacrifice cannabinoids for the sake of an experiment. lol
Click to expand...
I still plan to run them after 4 weeks in flower for 15 min aft lights out. I didn't see anything like that with that study, They used increasing percentage of reds with the reg lights and the more red the worse the outcome

. I saw another online from Microgrower and he used all reds or all blue or full spectrum & the blue was the worst if I remember right but regardless they ran Red, Blue & full spectrum through the full test not 15 min at lights out

I see a remarkable difference with just 15 min of 100% Far Red after just 1 week of use. I could see using them in high percentages over a long grow cycle as detrimental to the overall outcome but short burst here and there should help not hurt.....

I wish I could use them a bit more than I already do. I really like the looks of my plants after a weeks worth. I'm anxious for the Blues to show up...Not sure how I'll use them yet....the manual says they get hot and not to touch???......only 30 watts I'm surprised theres a heat warning.....I can use the added heat 10 months of the year so bonusheat...lol1742052382728.png
 
Pipecarver said:
I still plan to run them after 4 weeks in flower for 15 min aft lights out. I didn't see anything like that with that study, They used increasing percentage of reds with the reg lights and the more red the worse the outcome

. I saw another online from Microgrower and he used all reds or all blue or full spectrum & the blue was the worst if I remember right but regardless they ran Red, Blue & full spectrum through the full test not 15 min at lights out

I see a remarkable difference with just 15 min of 100% Far Red after just 1 week of use. I could see using them in high percentages over a long grow cycle as detrimental to the overall outcome but short burst here and there should help not hurt.....

I wish I could use them a bit more than I already do. I really like the looks of my plants after a weeks worth. I'm anxious for the Blues to show up...Not sure how I'll use them yet....the manual says they get hot and not to touch???......only 30 watts I'm surprised theres a heat warning.....I can use the added heat 10 months of the year so bonusheat...lolView attachment 93287
Click to expand...

Reading between the lines ... You probably don't want your plants touching the new blue lights then.
 
Driver77 said:
I found this inexpensive par meter that breaks down red, green, and blue.
Doesn't do far red or uva though...but found this for that
It would make it possible to get ratios dialed in pretty damn close....I have the old style of the first one but it doesn't separate the spectrum....Claude will be very helpful with this!
Click to expand...
I looked, there's no equivalent up here and I'm not spending a few hundred on another tool I won't use more than once or twice then the batteries die and they sit in my bookshelf gathering dust, I'm fighting this hard. I have my foot down NO MORE TOOLS ! No More Tools....no more tools.....ah shit
 
MiGrampa said:
Reading between the lines ... You probably don't want your plants touching the new blue lights then.
Click to expand...
I don't want anything touching them they get that hot. I hope its just a translation issue. They are From Vancouver Island after all and they speak funny over there. There a bunch of Kale eaters living out there and I think it gives them a lisp.....Can't trust them Kale eaters & their healthy fkin lifestyle. I hope they make good lights though but I just took out a light that got too hot..??? I'm confused now.
 
Pipecarver said:
I don't want anything touching them they get that hot. I hope its just a translation issue. They are From Vancouver Island after all and they speak funny over there. There a bunch of Kale eaters living out there and I think it gives them a lisp.....Can't trust them Kale eaters & their healthy fkin lifestyle. I hope they make good lights though but I just took out a light that got too hot..??? I'm confused now.
Click to expand...
Pretty well every LED light says the same warnings not to touch will be hot
 
Pipecarver said:
I looked, there's no equivalent up here and I'm not spending a few hundred on another tool I won't use more than once or twice then the batteries die and they sit in my bookshelf gathering dust, I'm fighting this hard. I have my foot down NO MORE TOOLS ! No More Tools....no more tools.....ah shit
Click to expand...
1742055491787.jpeg
 
Driver77 said:
Got an email ad from Migro talking about far red in flower....linked to this page.....they're not a fan.
migrolight.com

DO NOT use Far Red for flowering weed

There is some evidence that adding some far red to the grow light spectrum will increase yield very slightly. However the corresponding reduction in cannabinoids and terpenes means a much lower quality of harvest in terms of potency and aroma.
migrolight.com migrolight.com
Sorry I didn't see someone had already linked this.
They used 25% far red...
Click to expand...
I received the same email. @Observer also brought it up. Because of that, I took the 60 watts of far red and put it on a different time schedule. It's now running my 730nm far reds for 20 minutes before lights on, shutting off when the main lights come on and then turning on for a half hour when the main light turns off. All other light timing schedules remain the same. I'll also be turning off 110w of 440nm blue once I finish the stretch. At that point, I'll turn my 630w main light from 525w to 630w to offset the DLI change. I'm beginning week 3 of flower as of yesterday. I should be pretty much done with the stretch by next weekend.

Today, I'm going to post some new pictures taken earlier when I was feeding them and giving them another small round of defoliating. I'll finish the lollipopping over the next few days when I take another round of cuttings for my aerocloner. I purchased a tissue culture kit but the area I will be using for that is not ready yet ... so one more round of clones in the aerocloner ...

Here's a picture of all 9 lovely ladies ...

03.16.2025.jpg

Left to right I have 3 each of Gorilla Road Kill, Dante's Inferno, and Lemon Grass.


Here's a few close ups of the Gorilla Road Kill from above.

GRK1.03.16.2025.jpgGRK2.03.16.2025.jpgGRK3.03.16.2025.jpg

Next are my Dante's Inferno

DI1.03.16.2025.jpgDI2.03.16.2025.jpgDI3.03.16.2025.jpg

And last are my Lemon Grass

LG1.03.16.2025.jpgLG2.03.16.2025.jpgLG3.03.16.2025.jpg

It's been a busy day ... I still have clones to transplant and get ready for shipping. I'll get Claude involved again sometime soon.
 
MiGrampa said:
I received the same email. @Observer also brought it up. Because of that, I took the 60 watts of far red and put it on a different time schedule. It's now running my 730nm far reds for 20 minutes before lights on, shutting off when the main lights come on and then turning on for a half hour when the main light turns off. All other light timing schedules remain the same. I'll also be turning off 110w of 440nm blue once I finish the stretch. At that point, I'll turn my 630w main light from 525w to 630w to offset the DLI change. I'm beginning week 3 of flower as of yesterday. I should be pretty much done with the stretch by next weekend.

Today, I'm going to post some new pictures taken earlier when I was feeding them and giving them another small round of defoliating. I'll finish the lollipopping over the next few days when I take another round of cuttings for my aerocloner. I purchased a tissue culture kit but the area I will be using for that is not ready yet ... so one more round of clones in the aerocloner ...

Here's a picture of all 9 lovely ladies ...

View attachment 93598

Left to right I have 3 each of Gorilla Road Kill, Dante's Inferno, and Lemon Grass.


Here's a few close ups of the Gorilla Road Kill from above.

View attachment 93599View attachment 93600View attachment 93601

Next are my Dante's Inferno

View attachment 93602View attachment 93603View attachment 93604

And last are my Lemon Grass

View attachment 93605View attachment 93606View attachment 93607

It's been a busy day ... I still have clones to transplant and get ready for shipping. I'll get Claude involved again sometime soon.
Click to expand...
I'm still pondering that migro article.
 
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