Leafs curling downwards

Jason0121do1

Active Member
When did you water last?
Theres two sets of plants in there ones that have been in veg 3 weeks and ones that have been in veg a while longer.

I watered the smaller ones today and the bigger (just been repotted) ones i watered 2 days ago.

Both sets have leafs that are curling under
 

Jason0121do1

Active Member
Anyone think i should flush these? And if so should i add ph down as my water is 7.5 ph. Thanks or should i just flush without ph for a few days?
 

legalcanada

Well-Known Member
growing in coco you can always keep watering/flushing until the runoff equals what your putting in the top without worrying about over watering. curling up at the edges / tacoing sounds like heat stress or light toxicity, whats the temps of the leaf surface and what type of lighting/distance?
 

Roger A. Shrubber

Well-Known Member
the tips curling down is from overfeeding N. nothing else does that that i'm aware of
the leaf tacoing is from high heat, low humidity stress. whats the temperature at canopy height and whats the rh in your room? bet the first is high and the second is low
 

Jason0121do1

Active Member
yeah from looking at your pics it looks like heat/light stress or pests IMO
ive moved light further away from plants and im feeding with just water. See if i notice a difference within a couple of days. Ive also added a 4 inch intake "today" which i had lying around (The intake is coming from the same room the tent is in).
 

Jason0121do1

Active Member
the tips curling down is from overfeeding N. nothing else does that that i'm aware of
the leaf tacoing is from high heat, low humidity stress. whats the temperature at canopy height and whats the rh in your room? bet the first is high and the second is low
ambient temp was 27.7 celcius and temp in direct light was 26.7

mad huh lol
 

Jason0121do1

Active Member
growing in coco you can always keep watering/flushing until the runoff equals what your putting in the top without worrying about over watering. curling up at the edges / tacoing sounds like heat stress or light toxicity, whats the temps of the leaf surface and what type of lighting/distance?
never heard of light toxicity before.

also i cant seem to see any bugs with the naked eye
 

Roger A. Shrubber

Well-Known Member
what the relative humidity in your grow room? you want it to be at least 50% during veg, a little lower during flower. they not only can take a lot more humidity, they like it, unfortunately, so do pm and botrytus
 

Jason0121do1

Active Member
what the relative humidity in your grow room? you want it to be at least 50% during veg, a little lower during flower. they not only can take a lot more humidity, they like it, unfortunately, so do pm and botrytus
its usually around 30% some say thats fine. Maybe i need to get a humidifier then.

Thanks
 
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