OneHitDone
Well-Known Member
The two running currently are in the same tent with circulation. Temp swings up and down depending on light status and ambient garage temperature but light's on temps have typically been in the low to mid 80's.
All COB Users - Lettuce Grow Challenge!!
- Thread starter OneHitDone
- Start date
OneHitDone
Well-Known Member
I meant to drop an update last night on Day 19 to keep some consistency with my other lettuce side by sides but got tied up so here we are on Day 20.
To quote my old lady when I asked her opinion on the lettuce tent this evening - (with a look of confusion) "Are these all from the same start date??"
Overall Shot
Metal Halide
HLG 65
HydroGrowLed @ Day 19 for reference
Brother @hybridway2 what say you home slice? I know it's not cannabis but there is clearly something biological going on here
To quote my old lady when I asked her opinion on the lettuce tent this evening - (with a look of confusion) "Are these all from the same start date??"
Overall Shot
Metal Halide
HLG 65
HydroGrowLed @ Day 19 for reference
Brother @hybridway2 what say you home slice? I know it's not cannabis but there is clearly something biological going on here
hybridway2
Amare Shill
Wow! Ill get back to this later. Clearly something.I meant to drop an update last night on Day 19 to keep some consistency with my other lettuce side by sides but got tied up so here we are on Day 20.
To quote my old lady when I asked her opinion on the lettuce tent this evening - (with a look of confusion) "Are these all from the same start date??"
Overall Shot
View attachment 4410795
Metal Halide
View attachment 4410791View attachment 4410792
HLG 65
View attachment 4410793View attachment 4410794
HydroGrowLed @ Day 19 for reference
View attachment 4410796
Brother @hybridway2 what say you home slice? I know it's not cannabis but there is clearly something biological going on here
OneHitDone
Well-Known Member
Brother @Renfro , we still have not had a COB user pop in and meet the challenge of the title of this thread. Knowing that you are on a cob warpath as of late would you be willing to pop a single cob module together to see if you can replicate my results or just pop a lettuce seedling or two in the corner of your veg?
hybridway2
Amare Shill
Pop a MJ plant in there to see.
OneHitDone
Well-Known Member
That's fine, it's still a biological "canary in a mine shaft".
I'm sure your lady would appreciate a fresh salad or a nice lettuce wrap
OneHitDone
Well-Known Member
Just science brother, and it is information on lighting which is the section we are in. I know you know there is more to the world than weed even though that is the primary focus on this site bringing everyone together
hybridway2
Amare Shill
Do you have any Tomato Plants? Those 2 are close. Im curious.Just science brother, and it is information on lighting which is the section we are in. I know you know there is more to the world than weed even though that is the primary focus on this site bringing everyone together
Nice work bro. !!!
Curious about the weight & is there a way to test nutritional value? Prob not hu?
OneHitDone
Well-Known Member
A little day 24 intermission update until the full one tomorrow.
Maybe brother @Stephenj37826 can chime in here and help me understand what is going on.
A page back I posted a pic of this same lettuce variety growing under the HLG65 outside the tent and it seemed to be doing quite well.
Fast forward to this round and I am running the same variety in a 9 pack inside the tent and they are all just balling up bonsai style. I have played around with increasing the light distance (up to 26") knowing that the tent is increasing light levels but they still refuse to stretch out or elongate.
Definitely a head scratcher in my book.
Single plant under HLG65 previously
100W MH vs HLG65 tonight
Maybe brother @Stephenj37826 can chime in here and help me understand what is going on.
A page back I posted a pic of this same lettuce variety growing under the HLG65 outside the tent and it seemed to be doing quite well.
Fast forward to this round and I am running the same variety in a 9 pack inside the tent and they are all just balling up bonsai style. I have played around with increasing the light distance (up to 26") knowing that the tent is increasing light levels but they still refuse to stretch out or elongate.
Definitely a head scratcher in my book.
Single plant under HLG65 previously
100W MH vs HLG65 tonight
OneHitDone
Well-Known Member
Day 25 Update
The Metal Halide side has performed so well that I will be pulling the plug and harvesting tomorrow.
The MH plants are a solid 6-7 days ahead of the previous LED grows and frankly just spanking the crap out of the HLG 65. I would hardly call it a replacement at this point
100W MH
HLG 65
The Metal Halide side has performed so well that I will be pulling the plug and harvesting tomorrow.
The MH plants are a solid 6-7 days ahead of the previous LED grows and frankly just spanking the crap out of the HLG 65. I would hardly call it a replacement at this point
100W MH
HLG 65
OneHitDone
Well-Known Member
4K on the QB.
Would have to some digging for specs on the MH. It is also 4k or 4100K.
OneHitDone
Well-Known Member
Soo... now that your not in a legal spot and you have all that cob gear laying around, how bout setting up a small little lettuce grow to show us how well the lights perform? And don't use power cost as the excuse - we all know your a baller and can spare $10 a month. Plus you get a delicious salad 30 days later
OneHitDone
Well-Known Member
Harvest results are in!
Keep in mind that the metal halide side was basically down 1 plant do to my thinning accident. Had that plant been a full one it appears the MH would have just nudged out the led on grams / watt.
The interesting #'s are the totals per 2x2. 976.7g for the MH and 608.2g for the QB65. As well as the g/sq ft #'s - 244g for the MH and 152g for the led (remember the MH is down about 70 - 80g from my bad thinning).
This to me demonstrates that the MH will produce much more and better quality lettuce per sq ft than the Qb did for me in this test.
So, brother @hybridway2 asks - couldn't you fit more plants in on the led side to really outdo the MH in g/w? Note that the channels are about 3" wide. The quality is terrible on the led plants and they are so tight and Bonsai'd that you'd have to make a BLT on Ritz Crackers for the leafs to be usable in a sandwich.
I am certain that this result will ruffle some feathers and the fanboy crowd will defend and call me a shitty grower and whatever but Brother OneHitDone just calls em as he see's em and in this side by side the Metal Halide is the CLEAR Victor!!
Keep in mind that the metal halide side was basically down 1 plant do to my thinning accident. Had that plant been a full one it appears the MH would have just nudged out the led on grams / watt.
The interesting #'s are the totals per 2x2. 976.7g for the MH and 608.2g for the QB65. As well as the g/sq ft #'s - 244g for the MH and 152g for the led (remember the MH is down about 70 - 80g from my bad thinning).
This to me demonstrates that the MH will produce much more and better quality lettuce per sq ft than the Qb did for me in this test.
So, brother @hybridway2 asks - couldn't you fit more plants in on the led side to really outdo the MH in g/w? Note that the channels are about 3" wide. The quality is terrible on the led plants and they are so tight and Bonsai'd that you'd have to make a BLT on Ritz Crackers for the leafs to be usable in a sandwich.
I am certain that this result will ruffle some feathers and the fanboy crowd will defend and call me a shitty grower and whatever but Brother OneHitDone just calls em as he see's em and in this side by side the Metal Halide is the CLEAR Victor!!
PSUAGRO.
Well-Known Member
Yeah, because I don't have other shit to worry about....... Than growing lettuce.Soo... now that your not in a legal spot and you have all that cob gear laying around, how bout setting up a small little lettuce grow to show us how well the lights perform? And don't use power cost as the excuse - we all know your a baller and can spare $10 a month. Plus you get a delicious salad 30 days later
How about you come over and help me paint & lay down some crappy pergo floors? Thanks
OneHitDone
Well-Known Member
No problem bro, building shit is my jam
OneHitDone
Well-Known Member
For those with a short attention span, I have put the last lettuce side by side in video form
@OneHitDone how many hours did you run the lights?
"The formula for calculating DLI is: μmol m-2s-1 (or PPFD) x (3600 x photoperiod) / 1,000,000 = DLI (or moles/m2/day)"
DLI
The total output listed on that lamp is 152 PPFD but doesn't say at what height. Even if you were getting the full 152 on the plants and ran it 24/7 you'd get a DLI of 13.
It has been a long time since algebra for me so correct me if I'm wrong
(DLI * 1,000,000) / (3600 * photoperiod) = PPFD ?
So you'd want a minimum of 162.03 PPFD actually reaching the plants if ran 24/7.
"The formula for calculating DLI is: μmol m-2s-1 (or PPFD) x (3600 x photoperiod) / 1,000,000 = DLI (or moles/m2/day)"
DLI
| Butterhead lettuce | 14-16 |
The total output listed on that lamp is 152 PPFD but doesn't say at what height. Even if you were getting the full 152 on the plants and ran it 24/7 you'd get a DLI of 13.
It has been a long time since algebra for me so correct me if I'm wrong
(DLI * 1,000,000) / (3600 * photoperiod) = PPFD ?
So you'd want a minimum of 162.03 PPFD actually reaching the plants if ran 24/7.