And Wastei comes to the rescue.
Nick Hardy & Co Graduation: Coco Co2 High EC: Grown in Thailand: Perpetual
- Thread starter NickHardy
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- #822
He does indeed
They do already. Lights out is as 2am. By 1am they start to droop a little, all of them. I raised the light on the smaller ones yesterday to get a bit of stretch but think I’ll probably flip them in the next 2-3 days.
Thanks Wastei I learned something new right there.
Nick
I'd say feel free to hit them with 24/0 since the electric bill will still be cheaper than running the HPS!
If you watch time lapse video of cannabis plants, the leaves rise and fall according to their own schedule, including both rising and falling during the dark period.
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- #824
I’ve seen that - I don’t know how I forgot
Wastei
Well-Known Member
Yes they do but if a plant start to droop 2 hours before lights out it's a sign of stress and being given to much light. Healthy phototropism is normal, the plants ability to orientate and react to light.
Why would droop with lights on mean light stress if they also lift and droop during lights out? How do you know it's not just a day in the life of the plant? Correlation doesn't imply causation.
Also, I'm assuming your DLI guidelines only apply to indoor grows, yes?
Wastei
Well-Known Member
It's impossible to get any usable DLI measurements with all the variables outdoors. It's only good to know if they receive to much and need shading but it's self explanatory that there's nothing else to dial in when it comes to light intensity outdoors.
I don't know about you but this is my conclusions and what I do? I go by plant response and overall look and health. If a plant is droopy and pale I know I'm doing something wrong and I know how a plant react to much light after growing indoors on and off for 30 years.
Not impossible at all really. I get around 100,000 lux outside which is 2300 umol/s/m2. If I get that even for only 10 hours my DLI is 82.
The only time I ever move my plants into the shade is when the air temps are in the 90s because the leaves aren't used to that air temp plus the radiant heat from the sun. That happens about once a summer.
Oh gotcha. This: "More light is only better if you can keep DLI under ~40-50" reads like it was a fact, which I why I asked about droop during lights out. Maybe adding a "My feeling is..." or "I believe..." would help?
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- #829
My farmer mate always says if you’re not sure just take a breath and back it all off.
That’s what I’m doing. They’re getting 100L with just a soupçon of Calmag in and then next feed I’ll switch to DP Bloom nutes. They’re getting a vist from
The Demon Barberess tomorrow and/or Thursday and then flip. She had the solo grow to wet her appetite earlier today. Ordered in some more of her favourite little trimmers in expectation of a feast
Nick
That’s what I’m doing. They’re getting 100L with just a soupçon of Calmag in and then next feed I’ll switch to DP Bloom nutes. They’re getting a vist from
The Demon Barberess tomorrow and/or Thursday and then flip. She had the solo grow to wet her appetite earlier today. Ordered in some more of her favourite little trimmers in expectation of a feast
Nick
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- #830
An emerald lake - guess the short ones we’ll have to go a different style with with is fine.
Nick
Nick
Nice plants and getting ready for flip.An emerald lake - guess the short ones we’ll have to go a different style with with is fine.
Nick
Wastei
Well-Known Member
Go big or go home! Looks good Nick!An emerald lake - guess the short ones we’ll have to go a different style with with is fine.
Nick
Wastei
Well-Known Member
There's always the exception of said rule and something you should always have in the back of your mind. I tried to point out your words but I think you maybe judge instead of trying to understand my point?
I mean useable to the point of manipulation other than to know when to shade fragile seedling and plants? What else are you practically using it for? I'm talking about PAR meters and DLI outdoors.
It's a reference point indoors and nothing else. The plant dictates at the end of the day no matter what data you're trying to explain any variable about growing.
I was pointing out that using leaf droop as a DLI gauge might not be as effective as you stated, that was all. Turning your lights down (or off in veg) because your leaves droop might not be maximizing their growth potential. Turning the lights down (or off) because you hit the DLI is perfectly reasonable.
So, measuring DLI as a way to regulate the electric bill in veg (or make sure you have enough light in flower) is an excellent idea, and anyone with the money/skills to do it should be doing it. As you mentioned, 40-50 DLI is really as high as you need to hit indoors in flower, and even that might be more than is necessary.
This is the DLI chart that I refer folks to:
and LKABudman likes this one for the autoflowers he grows:
You're getting quite the rush there @NickHardy. At the end of the growth, you will have something to doAn emerald lake - guess the short ones we’ll have to go a different style with with is fine.
Nick
nice job bro 
Did you say "for the autoflowers he grows"?! I need to find his journals.I was pointing out that using leaf droop as a DLI gauge might not be as effective as you stated, that was all. Turning your lights down (or off in veg) because your leaves droop might not be maximizing their growth potential. Turning the lights down (or off) because you hit the DLI is perfectly reasonable.
So, measuring DLI as a way to regulate the electric bill in veg (or make sure you have enough light in flower) is an excellent idea, and anyone with the money/skills to do it should be doing it. As you mentioned, 40-50 DLI is really as high as you need to hit indoors in flower, and even that might be more than is necessary.
This is the DLI chart that I refer folks to:
and LKABudman likes this one for the autoflowers he grows:
I did, and I see you already found it!
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- #838
I was literally in the weeds earlier. Think I will be figuratively in a week or so. Switched to bloom nutes mild mix today. A dash of silicate, my wallet shrank in pocket as I syringed out 6ml of it into the tank
but they need their strength the size they are already. & Co is being a bit coy on the defol. today. Then she walked in there and couldn’t pretend any more. Tomorrow for sure. Black out some light leaks and flip.
Nick & Co and the sounds of whetstones on steel
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- #839
Spike Milligan when asked what he wanted on his gravestone.
That plant I was worried about died. Like epically died. Walked in this morning and it was literally cleaved in half and lying down. & Co saved some clones.
Root rot I guess, really weird. Long time for it to be something left over from up pot. Its in the far corner. Thats the lowest point in the room and also where 15/21 plants drain through. I want to investigate if there’s waste water backing up there or something. Another fan is going in there as well.
Annoyingly nothing big enough to replace that plant right now. But we’ll veg the 3 spare Red Hot Cookies up and chuck one in there in another week or two. Something will finish late.
They got The Barberess in there. She was actually really conservative. They still look sad tonight.
Nick & Co
Looking fantastic!
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