Leaf curl and gowing brown

J

jwills

New Member
Hi,

I'm in flowering at the moment and buds are growing well, only issue is the leaves are curling under and going crisp and brown. they are under 2 x 200 CFL's with 2 grow light strip lights 48w each front and back of the grow tent. Temps are 26 to 29c and i'm growing in coco with perlite. watering until water comes out of the bottom of the pot 3 times a week, coco is damp but not wet.

See pic
photo1.jpg

Any help would be good

Thanks
 
S

SeeRockCity

Active Member
yeah... the Ph range for cannabis to absorb the correct nutrients is 6.3 - 6.8
Since soil is a good buffer, sometimes you can water up with Ph up to 7. (which I do when I feed heavily)
just put some PhUP in your nutrient solution before you feed next time.. (and every time)... low Ph can cause burn and lockout...
a good flush may help if they dont seem to recover in a day or two.
 
J

jwills

New Member
Just washed them through with water 6.2ph until water run clear, plan to give them a couple of days and fingers crossed.
 
Jimdamick

Jimdamick

Well-Known Member
It sort of looks like light bleaching. How close are your lamps? Maybe you might consider backing off the lights a bit. Peace
 
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