Indoor One Month Update. Nitrogen Toxicity? Help Please!

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What's going on everyone? Been a while since I have posted, so let me get everyone up to speed...

Today is the one month mark on my Sensi NL and Skunk #1 Auto grow. They are in FFOF soil, and I have been using the Fox Farm trio pack along with Voodoo Juice and Piranha. The Skunks' all started flowering around day 20 and the NL's began flowering around day 25 or so. I have been feeding at about half strength, and my last feeding was 1 tbsp Big Bloom, 1tsp Grow Big, 1/2 tsp Tiger Bloom, and 1/8 tsp Open Sesame. I also watered today, with only Voodoo Juice and Piranha added. I switched over yesterday from my iPower 600w with a MH lamp, to my Solis Tek ballast with a 600W Ushio Higro Lux bulb. Everything seems to be doing pretty well, except when I went and checked on them today, I had a few plants (mainly the NL's) begin to show "the claw" on the top leaves. Now I had heard on autos, giving them N through the beginning of flowering was beneficial, and I am beginning to think I may have over done it. When I shut the MH off yesterday and pulled them out, they were a very dark green color. I have always ph'd the water and nutrients, and I top dressed the soil with dolomite lime a week ago.

I just wanted to get you guys opinions on what I can do about this problem? Today was the first day I noticed it, and it was also the first day of switching to HPS. I am not sure if I should flush the ones that are affected or just feed them straight ph'd water for a little while and see what happens. I am trying to avoid stunting them, as to not decrease my yield. If you guys have any thoughts and or suggestions, please let me know. It would be greatly appreciated! Thanks again guys.... Here are the pics...

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Northern Light, day of switch to HPS. Showing the claw.

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Skunk #1, probably the tallest of them all at around 22".

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Another Skunk #1, this is on is probably the lankiest of them all. Nice flower sites though.

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Northern Lights, showing the claw the worst, see pic with HPS on below.

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Sorry for blurry photo, NL. Stockiest plant, most indica dominant. Showing signs of the claw almost as bad as the one above. My favorite plant of them all, lol.

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Group shot of everyone, disregard the little guy in the back, hes been stunted and a run since day one.

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NL showing the worst clawing out of all of them.

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Same plant as above, close up. Showing bad signs of the claw on the top leaves...

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This is another NL that is also showing signs of the claw, not as bad as the above one, but it is definitely there.
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Skunk #1 with a few of the fingers of the leaves starting to claw.

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Group shot of the entire room, with HPS on.

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Flowering sites on one of the Skunk #1's.

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Another shot of flowering sites on the same Skunk #1 as above, this is the lanky one.

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Flowering sites on the tallest plant, Skunk #1.
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Here is the tallest Skunk #1 of the lot, very branchy.

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This is the very lanky Skunk #1, has good bud sites however. Might have to tie her up.

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And here is the biggest of the NL's. It is also showing the claw, this is a very bushy girl with a ton of branches.

So as you guys can see, the NL's are definitley being affected more so that the Skunk's by whatever is causing this. If you guys could please let me know what I can do to correct this problem while it is early, so I can get on without stunting them too bad. Should I flush them, just give them ph'd water for a few days in a row? Just give them ph'd water every few days (normal watering cycle)?

This is my first autoflower indoor grow, so I am very happy to have made it this far relatively problem-free. In the past, I have been a photoperiod green house grower (all organics), so all of this is new territory for me. I would be devastated if I ended up losing my girls over this, so I am trying to stay on top of this issue and get it resolved as soon as possible.

+Rep for any and all help, I am in desperate need of a solution to this problem. Thanks very much for taking the time to read my post, and I greatly appreciate any help!
 
Nice stuff bro:clap:
Can't say as they look bad but more knowledgeable people than me will be help best of luck:smokebuds:
 
What else do you see wrong other than the ones that have the clawed leaves?
 
Any more recommendations? Any and all help is greatly appreciated.
 
Hey bro, those plants look beautiful. You may have a tad too much N, if so, just barely. I wouldn't flush at this point for sure. A few questions, how far away are your lights? What is your temp in the tent? Are you checking runoff ph as well? If so, what is it? If you are top dressing with lime I would definitely be checking runoff. Do you have plenty of holes in those buckets, over watering will cause that claw look as well.

Best,
A4
 
Hey bro, those plants look beautiful. You may have a tad too much N, if so, just barely. I wouldn't flush at this point for sure. A few questions, how far away are your lights? What is your temp in the tent? Are you checking runoff ph as well? If so, what is it? If you are top dressing with lime I would definitely be checking runoff. Do you have plenty of holes in those buckets, over watering will cause that claw look as well.

Best,
A4

Hit the nail on the head. Here's thing your using FFOF soil, the reading from you run off might freak you out! I use the same and it scared the living bejesus out of me. FFOF has a lot of nutes in it so your run off is not going to look right, if you havnt flushed her before. Keep calm and I'd do just ph water next time as long as the claw doesn't get any worst. Keep an eye on her and back of the Grow Big next feed. I have bad luck with NL they seam a little touchy to me. :2cents: leaving a huge Leaving a karma clou
 
Thanks for the input guys, I really appreciate it. Canopy temps range from 74-81 or so, I moved the hps up some yesterday so it's around 12+14 inches above them. You are right about the FFOF runoff. I checked it about a week and a half ago, and it read 5.2 or so. It scared me to death so I top dressed with dolomite lime in case it really was that low to stabilize it. Other than that, everything has been going very well up until this claw issue. any more suggestions is greatly appreciated! so don't do a flush just yet?
 
I would definitely not flush yet. One more point. If you are really worried about it, post a thread in the infirmary. Nam will get back with you quickly.
 
:smokebuds:Your girls look fine except a few look a little streched out. Try moving you lights closer if you can.Also you shouldn't be feeding the any bloom nutes yet,only veg nutes.Don't worry about that little claw it;s not that bad.You have over fed them so I would just water them with plain water for the next two times then go back to a light dose of veg nutes only.Don't start the flower nutes until you see a full growth of pistols forming and there in full bloom stage.
 
The ones that are stretchy are the Skunks. They are extremely sativa dominant and really started stretching when they started throwing pistils. The NL'S are very compact with practically no stretch at all. I will try moving the lights a little closer. They seem to be in bloom, the Skunks especially have bud sites all over them, at least 20 or so. I will just give them water the next few feedings.
 
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