Help with this claw please??

Im at day 20 of 12 hours and have this clae on a couple of plants.....
Im using
Coco clay/ pebbles 60/40
dutch pro nutes e.c 1.2
Ph 5.8-6.0
Day 27c night 22c

It is only on a couple of the planta not all them

Looks like underwatering to me. How often how much are you watering them?

Autofire said:

Looks like underwatering to me. How often how much are you watering them?

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I give them 2 liters every morning just as lights come on, i have gave 4 liters each this morning and checked run off 1.2-1.4

That sounds fine. I don't have a lot of experience myself but it could also be too much light at the canopy

Autofire said:

That sounds fine. I don't have a lot of experience myself but it could also be too much light at the canopy

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I will raise the lights a touch see if this helps

That kindnof claw there looks like nitrogen toxicity, are the leafs super dark green also

This looks nothing like underwatering

Pics under normal light please.

Heres a couple of a leaf, will get a lights out shot also in few hours

budolskie said:

Heres a couple of a leaf, will get a lights out shot also in few hours View attachment 4858275View attachment 4858276

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Hmmmm, doesn’t look like it’s nitro toxic. By any chance is there a fan that blows more on those couple plants then the others? i have seen wind cause clawing in the past.

No i would say that is the furest away from the fan, the one in front of fan a differnt strain looks fine...

Was on a couple of my last plants also but they were healthy and smoke was fire

Doesnt look nitro toxic, Other thing i believe can cause it is ph imbalance ..i see some red stems there too which could also indicate that? Is your ph ok run off? Though red stems is normal for some strains

I havnt checked the ph of my run off before i will do that tomorrow morning thanks

budolskie said:

I havnt checked the ph of my run off before i will do that tomorrow morning thanks

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Np definitely worth checking.

What does a high/low run off ph indicate?

Star Dog said:

What does a high/low run off ph indicate?

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Cannabis needs the right ph inn order for the correct uptake of all nutrients. A bit higher and lower will work but will lead to certain issues if too far out of the optimal range

As for why it goes high or low not sure but will definitely look into it. My guess its something to do with build up of specific salts

Heres a picture where u can see its the 2 in corner and rest seem ok

If the rest are ok .. idk maybe you just have a picky pheno there and everythings ok

puffdatchronic said:

If the rest are ok .. idk maybe you just have a picky pheno there and everythings ok

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I dont think its the pheno bro, as my last 2 grows both different strains had few clawing plants in them.... strange as they seem healthy apart from that

Did you check the run off?

I have seen some strains do this and others not under the same conditions, I don't know why. May just be the strain or nute ratio