Look like new clusters of leaf growth to my eyes. I had 3 odd plants out of 23 I started last spring, all Photo’s Feminized seeds, 1 of mine ended up auto along with 1 a buddy of mine had, and my daughter ended up with a full out male, its happens just keep a eye on them.
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You not it went through my mind it could have been new leaves?
Maybe because i topped it they are 2 sets of leaves
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You know*
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It looks like one of your plants might be showing early signs of flowering, even though it’s still young. This can happen sometimes due to light stress or genetics, so just keep an eye on it and make sure your light schedule stays consistent!
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I have to agree with the others. What I see look like bundles of new baby leaves, which can fool you because they start off rather skinny.
Why are you running a 16/8 schedule, rather than the usual 18/6? There’s nothing wrong with it, but I’m curious.
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Hello, thank you for the advice.
Idk why I run 16/8 instead of 18/6; I read in many places either one or the other, so I do 16, so I save on 2 hours of electricity, should I put it at 18/6?
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Btw, in my other post, I published 2 pictures and some explanation about the A. It is an app that makes your avatar or what it’s called. This it’s easier than the other app to find the option. I am not sure if you missed the post.
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The DLI is what matters. You can run the light for 16 hours at one intensity or for 18 hours at a lower intensity. I’m just calling your attention to the need to consider DLI – not PPDF or PPD alone.
Yes, thanks for reminding me about the app. I did see your post. I’m not sure why there’s an app to make people look Polish, though. 
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i thought that as well, they are the same word.
Let me get back to you with DLI and stuff
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So, i should look to stay within the DLI chart instead than ppfd?
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I meant that attending to PPFD alone can be a mistake. PPFD and DLI should both be considered.
When we choose a PPFD and a light cycle (such as 18/6), we’re also choosing a DLI. It’s good to know what that DLI is and compare it to norms.
I was reminded of this lesson recently with a plant that’s in veg. I was giving it 800 PPFD on an 18/6 cycle and wondering why it was showing signs of light stress. I’ve seen charts that show cannabis can benefit from as much as 1000 PPFD without supplemental CO2. Could there by something wrong or missing from the nutes I was giving it?
When I calculated the DLI, the problem became obvious. 18 hours of 800 PPFD produces a DLI = 52 mols/day, which was clearly too much. I backed the PPDF off to 650, which yields 42 mols/day, and the plant recovered from the photon overload over the next three days.
A more experienced grower would have probably diagnosed and corrected the problem without needing to measure the PPFD or calculate the DLI. I’m not there yet and my professional background is science and engineering, so I rely a lot on measurement as a guide.
There’s a handy DLI calculator here.
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Hi again dear, i got you. I rarely look at the DLI, just the ppfd, i did at first but it was always within the chart so i stopped
I will check now.
Thank you as always for your very detailed explanation 
x
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