Leafs curling in flowering

weedworm

weedworm

Well-Known Member
Hey all I am in week 3 of flower and am having a issue with the leafs curling inwards and I am not sure what's going on temps have been steady 75 during lights on and between 65-70 when's lights are off I am using Gen Hydro lines of nuts any help would be much appreciated
 

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TintEastwood

TintEastwood

Well-Known Member
weedworm said:
Hey all I am in week 3 of flower and am having a issue with the leafs curling inwards and I am not sure what's going on temps have been steady 75 during lights on and between 65-70 when's lights are off I am using Gen Hydro lines of nuts any help would be much appreciated
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Coco? Soil?
 
weedworm

weedworm

Well-Known Member
I think the pale look is coming from the dual arc bulb blue/red light they look nice and green under regular light if you look at this chart I am on week 6 not using straight water in between feeding fallowing the chart exactly my ppms has been around 630-650
 

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weedworm

weedworm

Well-Known Member
TintEastwood said:
Gotcha on lighting - they do seem healthy, just the curl.
Heat/Light stress and/or low humidity (vpd) can cause curling.
Calimagic could be needed, hopefully some pro mix growers will chime in.
@Boatguy knows his Promix! :peace:

Here's an example of how I keep track of nutes, not that you need to.

View attachment 4442677
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Thank you very much for your help il grab some calimagic and maybe get them a little further from the light incase it is a heat issue again thank you and Happy Holidays
 
H

HashBucket

Well-Known Member
weedworm said:
Thank you very much for your help il grab some calimagic and maybe get them a little further from the light incase it is a heat issue again thank you and Happy Holidays
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Hold your hand at the canopy for 30 seconds. Does it feel hot? If not, its not too hot.
CalMag might be it ... but how often are you watering?
Do you ever let it get a little bit on the dry side?

Does ProMix have nutes already in it?
If so ... maybe adding more at 800ppm is too much?

I think it's over watering ...
 
weedworm

weedworm

Well-Known Member
HashBucket said:
Hold your hand at the canopy for 30 seconds. Does it feel hot? If not, its not too hot.
CalMag might be it ... but how often are you watering?
Do you ever let it get a little bit on the dry side?

Does ProMix have nutes already in it?
If so ... maybe adding more at 800ppm is too much?

I think it's over watering ...
Click to expand...
No it dose not get to hot to keep my hand there I have a thermometer hanging just under the hood it dose not really ever get above 75

I am watering every 4 days or so I wait until the pot gets light I also use warror pots so they drain very well

My humidity is pretty low though

No the pro mix is about as pure as you can get and I dont add any additives to the soil or anything like that
 
H

HashBucket

Well-Known Member
weedworm said:
pro mix is about as pure as you can get and I dont add any additives to the soil
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OK, so then, it has to be over watering ... right?

I dunno if you answered this already, but, are you using hard sided pots? They don't dry as fast and they don't allow air circulation to the roots.
Next grow - try a smart pot.
Put it right next to your other plants and treat the same and see if you see a difference.
 
weedworm

weedworm

Well-Known Member
I use hard pots I have used them since they have been on the market and have never had issues with them

It maybe over watering anything is possible but I am leaning towards some other issue

ALSO after going down there and taking another look it's really only the 1 strain doing it and not the other

Pics are pots I am using 5 gal
 

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TintEastwood

TintEastwood

Well-Known Member
Seems to be primarily Ca/Mg? Upper leaves, lower?
www.growweedeasy.com

How to fix Cannabis Calcium Deficiency (Ca) Pics & Symptoms

Calcium deficiencies cause tiny brown spots that appear on new and middle growth. Learn how to fix this problem for good!
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Calcium deficiencies are more likely to appear when…

  • Grower is using filtered or reverse osmisis (RO) water to feed plants – the amount of calcium found in tap water varies, but some tap water has enough calcium to prevent calcium deficiencies
  • PH is Too Low – If grow medium is acidic (below 6.2 pH, Calcium can get locked out even if the Calcium is physically there)
  • Growing cannabis in hydroponics or coco coir without supplementing extra Calcium (it’s recommended to use a Calcium supplement in hydro or coco)
  • When growing in soil that hasn’t been supplemented with calcium (usually from dolomite lime)
  • Too much potassium can also sometimes cause the appearance of a calcium deficiency
 
Teag

Teag

Well-Known Member
To my inexperienced eyes The first pictures you posted look only like only the upper leaves are curling. I'm guessing it is too hot / close to your light.
Now it looks like you how a calcium deficiency.

weedworm said:
Ok so I am crashing down hill now went in the room today and have some of these
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weedworm

weedworm

Well-Known Member
Still having a curling issues

Blue berry is having the curling issues

Skunk is having this new issue
Its mainly the leafs at the top or middle and just the big fan leads

I have attached pics showing how far my light is away from the plants and what my my room conditions are
 

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