Eagle claw leaves HELP!!

So I'm a little over 2 weeks flowering. I'm using a ebb not grow system with 2 gallon buckets and a 25 gallon reservoir. I am running two strains. One strain is doing fine and has no issues. The other strain is starting to get claw leaves at the top of the plants. They look good other than that.

I am using gh nutes Lucas 1:2 ratio. My pH meter is messed up, not exactly sure what it is, it is reading 6.2 pH but I think it is actually 5.8. I calibrate it to 7 with the 7 pH solution and when I try to calibrate with the 4ph solution I can only turn the screw to 4.4 pH and can't go any further with calibration. So I think the meter may be .4 off New probe is in the mail and will be here Monday. My ppm is 1050 as of now. I had the ppm at 1300 as of last week. My tap water is about 200 ppm. Did a res change yesterday.

I've read N toxicity can cause claw. I'm using Lucas though which is low in N.

I've heard broad mites can do stuff like that too but I can't see any bugs and the agent oranges are no affected with the same symptoms.

And pH. No idea what my pH has really been for a week or so..

Problem is only my Larry og are showing the claw and none of my agent oranges. So that's why I'm stumped. They look decent other then the claw at the top bud sites leaves.

Any ideas?? I'll have pics of the problem later

well, hard to say anything if your meter is off. 5.8 is optimal, and it sounds like your rez is large enough. usually 5 gal. of medium per plant, will keep you from getting huge ph swings.

Silky Shagsalot said:

well, hard to say anything if your meter is off. 5.8 is optimal, and it sounds like your rez is large enough. usually 5 gal. of medium per plant, will keep you from getting huge ph swings.

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Yeah, there's virtually no pH swings, it's steady pH, but the meter is reading wrong , but I'm not sure exactly how much it's off, I'm just guessing when it's reading 6.2 it's actually 5.8 since I can't calibrate it properly. Hmm it's driving me crazy though lol, here's a pic

And here's the agent oranges that have no symptoms. If it was broad mites I would think the whole crop would be effected :/

Here's some more pics.. It's pretty bad.. Any ideas anyone?

Anyone have any idea? Can root rot cause this? There's no way I can get to the roots since it's a Scrog.. Hellllppppp

Well it looks like it's not getting any worse and it's only on a few tops. I'm gonna chalk this one up to shitty cali connection genetics on the Larry og. I'm not sure if this is the swerve cut or cali beans since I got it as a clone and not sure which it was, but not impressed, been having many problems with the strain since I got it. If it happens to be a cc Larry seed, I think they need to go back to the drawing board and take it off the shelves

Try cutting back on the nutrients. Clawing is often a sign of too much N, and can have that effect ...particularly on sativas

st0wandgrow said:

Try cutting back on the nutrients. Clawing is often a sign of too much N, and can have that effect ...particularly on sativas

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Thanks for the info, I'm not too familiar with saliva grows, it definitely looks like an n overdose for sure but my n levels are pretty low, I'm gonna try to dilute it a little more and see how they do. I can't seem to do anything right with these damn Larry ogs, the Larry bud is so good but damn it hasn't been worth it to grow for me personally I should have went with another strain

Anything over 1000ppm only 2 weeks into flower is way too high.
Also, just because your 4.0 cal solution is reading 4.4, it doesn't mean you are simply 0.4 off. The 2 point calibration calculations aren't so linear and intuitive. If you have a Hanna meter, never buy one again. Get a BlueLab

thegreensurfer said:

Anything over 1000ppm only 2 weeks into flower is way too high.
Also, just because your 4.0 cal solution is reading 4.4, it doesn't mean you are simply 0.4 off. The 2 point calibration calculations aren't so linear and intuitive. If you have a Hanna meter, never buy one again. Get a BlueLab

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Bingo, it's a Hanna lol. It's one of the continuous reading meters that has pH and ppm and I don't like it. Only had it a few months now and it's worse than the $20 meters I used to use. I got the new probe for it yesterday and after calibration I realized pH was high. It's 7 conversion meter and my tap water is 220ppm and I am running Lucas formula which says to use 1330ppm. That seemed way too high tho I did hit 1300 ppm for a week or so before backing it back down to 1000. It's the first time I've used Lucas, I knew it sounded too easy too be good grrr

how often are you watering?

reddan1981 said:

how often are you watering?

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Currently 4x (every 4 hours lights on) and no floods during dark period. I was flooding every 6 hours before flowering

You are overwatering your plants. If the very ends of your leaves are cupping, then nuts are a problem, but if whole leaf is clawing and loosing colour, then overwatering is your problem. Lots of people run into this when flipping their flowers from 18s to 12s. Chill out on the water for the first week or so as you have removed 6 hours of light from the girls, and as the root systems develop some more, ramp it up again. If you keep overwatering, you will run into bigger issues.

i assume your in clay pebbles? Regardless check all water is draining sufficiently from bottom of pots

Yeah, I'm using hydroton, I'll switch the timer to flood every 6 hours, once when light comes on, once 6 hrs later and once a half hour before lights out and see if that helps, it is the whole leaf doing the claw, only at the tops of the plant. I really can't check if everything is draining out of the pots though, I have the plants in a screen for a Scrog

I am using the hydro farm active aqua gro flow system, it has the drain/fill at the bottom of the pot instead of on the sides so drainage should be good unless the roots are clogging the drain, before I put the screen up I checked to see if there was any water that didn't drain and it was draining I00%, I wish I could check the roots now but I don't think I can move anything without destroying them

if your roots are sufficating I believe each one is co-related to a leaf. damage some roots affect some leaves maybe?

reddan1981 said:

if your roots are sufficating I believe each one is co-related to a leaf. damage some roots affect some leaves maybe?

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That thought crossed my mind too, Hmm... I really hope it's not aroot problem or iI'm screwed... Here's a picture of the ebb bucket, there is an inner net pot slightly smaller than the outer pot and the bottom of the inner pot pretty much sits on top of the bottom of the outer pot where the drain is.. And here's a pic of the Scrog, it's really too big too check the roots, I don't think I should have tried to Scrog with this system