Clawing leaves...

shiva71

shiva71

Well-Known Member
Hiya
Can anyone help me identify what is causing this? Its kinda annoying! 4 x cree 2530 cobs (like mini 3590s), 48w. RH 70%, RT 20°. DWC ppm is up to about 750, it is still falling so that will probably go up to 850 soon. Lights are 12" away from canopy. It was much closer, the clawing seems to have improved with it being further away but its still there.
Any ideas?
Cheers!
IMG_20200215_131224223.jpgIMG_20200215_131239564.jpg
 
shiva71

shiva71

Well-Known Member
No thats not something ive noticed. I just checked my rez and it was a bit mucky, cleaned everything up lets see if that helps.
She's a bit droopy and growth has been slower than expected. She's 5 weeks old today.
Cheers!
IMG_20200215_131208119.jpg
 
shiva71

shiva71

Well-Known Member
Cheers guys. Roots look fine. I had a look at some pics of nitrogen def and yeah it looks very similar. Reduced ppm to 500 and put heating on to raise temps a bit.
If it is nitrogen toxicity, will the clawed leaves straighten up if the lower ppm works?
Cheers guys!
 
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shiva71

shiva71

Well-Known Member
70's natureboy said:
That isn't classic looking N claw. I think they need more light and heat. Less nutes is always good too.
Click to expand...
Cheers. This pic from GWE looks exactly like mine. Going down to 500ppm hasnt done a thing, ill dilute the rez down further see if that does anything.
Will lower light too this will raise temps.
Thanks for the input so far guys :)
 

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fragileassassin

fragileassassin

Well-Known Member
shiva71 said:
Cheers. This pic from GWE looks exactly like mine. Going down to 500ppm hasnt done a thing, ill dilute the rez down further see if that does anything.
Will lower light too this will raise temps.
Thanks for the input so far guys :)
Click to expand...
with an excess that far, you wont see much of an improvement overnight, just look for it to stop getting worse for the first couple days.
 
shiva71

shiva71

Well-Known Member
Ive moved her to her proper tent under a QB288 and she seems better, still some twisted leaves but they seem to be straightening up. I dunno, for the first 4 weeks i have my plant in a small 1ftx1ft cab i made. I had exactly the same issues around the same time last grow, twisted leaves. I dont really have any venting in the small cab, no air going in, none coming out...i think maybe its the stagnant air causing the issues.
Anyway shes sucking up nutes, she was at 450 9:00am this morning and 10 hours later its dropped to 330 so ill keep bumping it up and keep an eye out for more twisting leaves but i reckon she's gonna be fine :)
Cheers for replies guys much appreciated!
IMG_20200218_201031452.jpg
 
Covert Cannabis

Covert Cannabis

Active Member
shiva71 said:
Hiya
Can anyone help me identify what is causing this? Its kinda annoying! 4 x cree 2530 cobs (like mini 3590s), 48w. RH 70%, RT 20°. DWC ppm is up to about 750, it is still falling so that will probably go up to 850 soon. Lights are 12" away from canopy. It was much closer, the clawing seems to have improved with it being further away but its still there.
Any ideas?
Cheers!
View attachment 4480003View attachment 4480004
Click to expand...
Maybe a little overwatering or Nitro tox but don't sweat it. You seem to know what you're doing by the looks of it, just try bringing the Nitro levels down a bit, maybe water a little less... see what happens. Plant looks relatively healthy besides that clawing
 
shiva71

shiva71

Well-Known Member
Covert Cannabis said:
Maybe a little overwatering or Nitro tox but don't sweat it. You seem to know what you're doing by the looks of it, just try bringing the Nitro levels down a bit, maybe water a little less... see what happens. Plant looks relatively healthy besides that clawing
Click to expand...
Cheers. What if it was nitrogen toxicity? N is included in the veg nutes so if you cut back on that you're cutting back on everything else. So how do you reduce N but carry on feeding as usual?
 
shiva71

shiva71

Well-Known Member
O
its.always.420 said:
How far away is the qb288? IMO, new growth should not be twisted like that, and it's usually from too-intense LED light in veg. Hit the right height and it will stop immediatly.
that's deffo too close for veg

also what are your temps day/night
Click to expand...
Ok cheers yeah i noticed the tips further from the light seem healthier. Raised qb, its now 20" from canopy. Temps 25°, RH 35%.
Thanks!
 
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