⇧Brother OneHitDone's HydroGrowLed MEEt's LETTUCE Grow Test⇧
- Thread starter OneHitDone
- Start date
OneHitDone
Well-Known Member
Was on the road part of day 21 so here is Day 22
And comparison between the back of the tent extra low intensity LED and the MH plants
And comparison between the back of the tent extra low intensity LED and the MH plants
Big Perm
Well-Known Member
OneHitDone
Well-Known Member
HydroGrowLed seems to have a thing with porn......Root porn that is so here we go 
SSGrower
Well-Known Member
Being that you have two varieties in here front corners and middle back, it is a little tough to say, but I think you have too much intensity. I dont see any burn, its just the wrinklyness of the leaves. The one in the middle looks worst. Did you ever confirm are you matching the dli Cornell used? Their study being a 24hr cycle I am guessing the intensity was much lower than what you are using. At the point we are at (you and I) I am prepared to say given the 2 options of white phosphor or monos, intensity outweighs spectrum because it is much more difficult and expensive to tune spectrum. Beyond that, given a minimum base intensity, environment is more important than light.
Thundercat
Well-Known Member
Are we looking at the same grow here? His plants look to be FAR out performing the cornel plants and the MH. Maybe slightly wrinkled leaf edges or a tad bit darker color, but it appears much more intense growth. I don't know if lettuce is the same as cannabis but I've seen cloned plants look completely different in someone elses grow room. I would think the same could happen with lettuce.
OneHitDone
Well-Known Member
At the intensities some of the plants (especially the ones being compared to the MH) are at, I can say I am impressed with the amount of growth happening.
I have played with white led's and it is my observation that red dominant spectrums definitely drive more photosynthesis per intensity. I Saw similar comparing CopperHead CX4 to 4K Citizen cob.
Grand Rapids is wrinkly variety and obviously we are growing from seed so there will be some variation. That's also why I thew in the 3 butter crunch type. That way at the end we can see how two different structures of plants perform under the spectrum.
My DLI is set close to what Cornell noted as ideal for the variety testes. The only time they were at 24 hours light was in germination I believe. Maybe I missed that.
Not sure if having the excessive intensity at the start will effect the final quality and will probably never know.
Here are finished Grand Rapids leafs and my household has eaten many so at harvest I will really know whats up.
I have played with white led's and it is my observation that red dominant spectrums definitely drive more photosynthesis per intensity. I Saw similar comparing CopperHead CX4 to 4K Citizen cob.
Grand Rapids is wrinkly variety and obviously we are growing from seed so there will be some variation. That's also why I thew in the 3 butter crunch type. That way at the end we can see how two different structures of plants perform under the spectrum.
My DLI is set close to what Cornell noted as ideal for the variety testes. The only time they were at 24 hours light was in germination I believe. Maybe I missed that.
Not sure if having the excessive intensity at the start will effect the final quality and will probably never know.
Here are finished Grand Rapids leafs and my household has eaten many so at harvest I will really know whats up.
ChronicWonders.
Well-Known Member
Those are looking very nice and healthy IMO.
Thundercat
Well-Known Member
Awesome info and excellent salad fixings!
SSGrower
Well-Known Member
I was speaking to the plant formation, I agree ohd probably has more mass. One big thing with white leds Ive noticed is sub par leaf texture and head formation. The hgl sprctrum seems to be mitigating those issues to some extent, I still hold the opinion less may be more in this situation.
I have re-read the report a few times, it mentions the photoperiod remains at 24hrs. There is no mention of it reverting to a natural schedule at day 11 or 21 whenever they move to the greenhouse. Also based on the statements that it is production and energy intensive with a focus on consistency. I interpret that as they are maintining the minimum dli of 17 mol/m2/day by extending the day lengths not increasing intensity, but its not totally clear.
OneHitDone
Well-Known Member
Quick Day24 update:
Did a res change to give them a fresh drink and keep things nice and balanced.
HydroGrowLed informed me that a spectrum tweaked 42X is in route so I can rerun this test and see what altering the ration does for leaf texture, etc.
This batch will finish pit with the lighting as is.
Did a res change to give them a fresh drink and keep things nice and balanced.
HydroGrowLed informed me that a spectrum tweaked 42X is in route so I can rerun this test and see what altering the ration does for leaf texture, etc.
This batch will finish pit with the lighting as is.
SSGrower
Well-Known Member
More blue or white? Or?
OneHitDone
Well-Known Member
"To achieve that goal I am sending a spectrum that has been revised to 5% blue, 10% green and 85% red with a 10:1 ratio of R to FR. This test has been run with our standard 10% blue, 15% green, 75% red ratios with a 4:1 ratio of R to FR"
HGL has an interesting take on where the spectrum should go to remedy the thick leaf and other issues. I am all ears as they are the only led company thus far to step up and bring some science to the discussion and also provide the gear for testing
SSGrower
Well-Known Member
I almost asked if it was gonna include orange, thats almost what she is effectively doing though no?
I am glad you are working with hgl, I agree on science. The thing is all the science is out there we just need to look outtside the cannabis industry that is rife with the attitude and emotional issues. Personally I would not do business with her, I turned down the opportunity to test her cobs even though I think they are promissing. Attitude is what makes a company, hgl wont go out of business because I decided not to be a customer, but she also wont get the feedback I could provide. IDK what she did on the skyline/nissan forums except that she continues with the same attitude, an unchanged person, I afford people the opportunities to right wrongs, she does not seem to be one of them.
I would also add other manufacturers are bringing science to the discussion, but like hgl they too are vested in their ideas and will provide interpretaions of the data that suit them. E.g. hgl and lenses, the lense losses are less of a concern for hgl because she justifies having more light incident on a 2d surface is better than "loosing" that light or allowing it to land outside the intended 2d footprint. She is not thinking in 3d here, I do, so I take advatage of that light she sees would be wasted. That is the way of the world, all data can be manipulated to prove any point, we must decipher the noise.
OneHitDone
Well-Known Member
I don't know what did or did not happen in the past a decade or whatever ago either. This is 2019 and I am only interested in here, now, and moving forward.
There may be a lot of research out there but it is definitely not being implemented in the current products on the led grow light market.
My cob lettuce challenge thread is a perfect example. If it were so easy to produce a field grown head of lettuce under led with no burn or shaping issues, one of these stoners would be all over it with "I told you so".
Even the companies who I would consider market leaders such as Transcend Lighting or the Fluency types will post all kinds of info on their website with science but why have I not found 1 single end user of the product killing it growing FULL SIZED greens? Maybe they are out there, if you found one let me know.
In the meantime, we have someone offering all the tools to me to make repeated grows with altered spectrum and intensities to get to the bottom of the leafy greens with led issues.
It's kinda sad to me that most are so dense they don't realize that the spectrum that unlocks the led lettuce issue just could possibly be the silver bullet for cannabis veg too
SSGrower
Well-Known Member
My opinion of her is based primarily on the direct interactions I had with her. I gave her a chance at having peaceful interactions, she seemed not to want it.I don't know what did or did not happen in the past a decade or whatever ago either. This is 2019 and I am only interested in here, now, and moving forward.
There may be a lot of research out there but it is definitely not being implemented in the current products on the led grow light market.
My cob lettuce challenge thread is a perfect example. If it were so easy to produce a field grown head of lettuce under led with no burn or shaping issues, one of these stoners would be all over it with "I told you so".
Even the companies who I would consider market leaders such as Transcend Lighting or the Fluency types will post all kinds of info on their website with science but why have I not found 1 single end user of the product killing it growing FULL SIZED greens? Maybe they are out there, if you found one let me know.
In the meantime, we have someone offering all the tools to me to make repeated grows with altered spectrum and intensities to get to the bottom of the leafy greens with led issues.
It's kinda sad to me that most are so dense they don't realize that the spectrum that unlocks the led lettuce issue just could possibly be the silver bullet for cannabis veg too
The expense ratio is not low enough, the only people using leds to grow anything in the us are subsidised in one way or another. Energy credits do not produce foods, just a solar panels did not (and will not) solve our energy problems.
I hold the opinion if some of these stoners would adjust their environment yould see some better looking heads of lettuce. And they hold no motivation for doing it.
Fact of the matter is with legalization the logical argument is for a home grower to suppliment natural light in a small greenhouse setting not unlike in the Cornell study. The hgl method is not effecient in any sense other than spectrum plant interface, bring those ineffeciencies down then it becomes viable.
OneHitDone
Well-Known Member
And - This Just In!!!
Revised spectrum for continued testing.
My Dry Closet is empty at the moment so I will hang the new spectrum in there and get the next batch cracking while the first round finishes up.
Should be about perfect timing for when the new batch is ready to be spread out and moved to the NFT Channels
The new ratio is 5% Blue 10% Green 85% Red with a 10:1 Red to FR Ratio as apposed to 10% blue, 15% green, 75% red ratios with a 4:1 ratio of R to FR in the first test.
Revised spectrum for continued testing.
My Dry Closet is empty at the moment so I will hang the new spectrum in there and get the next batch cracking while the first round finishes up.
Should be about perfect timing for when the new batch is ready to be spread out and moved to the NFT Channels
The new ratio is 5% Blue 10% Green 85% Red with a 10:1 Red to FR Ratio as apposed to 10% blue, 15% green, 75% red ratios with a 4:1 ratio of R to FR in the first test.
OneHitDone
Well-Known Member
First up are the Back of the tent almost shade grown HGL vs the Metal Halide seedlings.
HGL Left, MH Right
Day 28 for the rest of the tent. Seeing a bit of tip burn on a few. I personally have a hunch the intensity is still higher than it needs to be but let's see what the adjusted spectrum does first.
Seeds have been germinated for the 5% 10% 85% spectrum test. Will keep these in my drying closet until the tent frees up at harvest. Also moved the two from the back of the tent under the new spectrum just to give them more space and get a sneak peak of how the spectrum change is going to affect things.
HGL Left, MH Right
Day 28 for the rest of the tent. Seeing a bit of tip burn on a few. I personally have a hunch the intensity is still higher than it needs to be but let's see what the adjusted spectrum does first.
Seeds have been germinated for the 5% 10% 85% spectrum test. Will keep these in my drying closet until the tent frees up at harvest. Also moved the two from the back of the tent under the new spectrum just to give them more space and get a sneak peak of how the spectrum change is going to affect things.
Thundercat
Well-Known Member
Looks like some crunchy salads in your near future!! Nice update.
Are the pictures under the new spectrum white balanced? It honestly looks whiter and less pink even though it has more red.
OneHitDone
Well-Known Member
It is white balances but it is also less pink. Looks close to "Warm White"
Honestly I had to do a double take when I first turned it on - I was like, Really?? HydroGrowLed put white diodes in there?? Then on close inspection you see what the individual chips are.