New grower, Is this N Toxicity?

I have been researching over the last view days of N toxicity. People describe the problem clawing that looks like a bear claw or eagle claw. So far the recommendations have been to flush. But before I do that I would like to be sure. I am only asking because I do not see any yellowing. Or any other symptoms other than the claw. People with similar problems say that it is an N toxic or ph deficiency.

I'm using fox farms happy frog soil with 33% perlite mixed. Ph of soil about 6.3-6.5 ph. Water ph stays between 6.0-6.5. I wait until everything is dry before I water. Day temps 77F-84F; night temps 69F-73F. Humidity stays below 50%. Fans circulating air 24/7. I have not fed any Nutrients.

The front one shows mild clawing but the back one is doing it pretty badly.
This on 3/16
This is on 3/18

Another thread said that it had to do with watering fan leaves, but I quit watering the fan leaves since 2/16 Wednesday. It could need more time to recover, although watering the fan leaves might not even be my problem.

N toxicity typically will give you very dark green leaves. I don't see it in your plants, and they look healthy overall to me.

I know clawing can also result from overwatering to much light off the top of my head. I'm not very experienced in soil so I really have no advice on how to remedy your clawing unless your running a high power light to close. If so I would reccomend raising it if so to see if that helps.

Reduce your daytime temps a bit if you can,what and how much are you feeding them? To me it looks like maybe ec is a tad high along with temps getting borderline high is causing some stress to the plant.I dont see any tip burn.I wouldnt flush it,but next feed give it a half strength and see what happens.

Resinhound said:

Reduce your daytime temps a bit if you can,what and how much are you feeding them? To me it looks like maybe ec is a tad high along with temps getting borderline high is causing some stress to the plant.I dont see any tip burn.I wouldnt flush it,but next feed give it a half strength and see what happens.

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I have not fed them anything. Just tap water ph'd at between 6.0-6.5.
I have also kept temps between 75F-80F today to help. But Im having a hard time keeping temps below 79F because im running 3 125w cfl lamps.

AbeFroman said:

N toxicity typically will give you very dark green leaves. I don't see it in your plants, and they look healthy overall to me.

I know clawing can also result from overwatering to much light off the top of my head. I'm not very experienced in soil so I really have no advice on how to remedy your clawing unless your running a high power light to close. If so I would reccomend raising it if so to see if that helps.

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I keep the lights at about 2-4 inches. It's a 125w 6400k CFL. I will raise it to 5-6 inches and see if that helps.

mean.green said:

I have not fed them anything. Just tap water ph'd at between 6.0-6.5.
I have also kept temps between 75F-80F today to help. But Im having a hard time keeping temps below 79F because im running 3 125w cfl lamps.



I keep the lights at about 2-4 inches. It's a 125w 6400k CFL. I will raise it to 5-6 inches and see if that helps.

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If ypu havent fed anything in happyfrog,its probable heat/intensity stress.Happyfrog is a pretty light mix if I understand it correctly,never used it before.

Well I guess too much light is a better problem to have than too little light. I will keep you guys updated to let you know if raising the lights helps. Thank you, Resinhound and Abefroman for your quick responses!!!!!!

You guys were right about the heat being too much for them. Last night when I went to turn the lights on I noticed the coning was major, therefore the heat was too much at (83F).
After keeping the room, below 75F, with the lights on; they recovered in ten hours at temps of 70F-75F, with no more signs of heat stress.

The clawing is taking longer to recover, so far its been about 24 hours since I raised the lights from 2-4 inches; to 6 inches and they look a better than before.