recover from nitrogen toxicity

akaki

Well-Known Member
I had some toxicity issues with nitrogen before (dark green leaves).Before 2 days i flush the plant and today i realize that all tops are light green
IMG_2424.JPGIMG_2420.JPG IMG_2416.JPG

is that recovery sings or i have a new problem?
the plant is 1 month in flowering
temps 25-29 C
ph 6.7
medium perlite black peat 50-50
 

Bugeye

Well-Known Member
Dark green leaves don't necessarily mean nitrogen toxicity, some strains are very dark. The tell tale sign is a downward clawed leaf tip which will not go away. So I don't think you were over doing the nitrogen to begin with because I don't see the claw in your pic. New growth is generally a lighter shade of green but if it has gotten lighter from what you had before then it can be a sign of a nutrient need. Nitrogen deficiency will start at the bottom of the plant so if the bottom is still looking good it is something else.
 

akaki

Well-Known Member
Dark green leaves don't necessarily mean nitrogen toxicity, some strains are very dark. The tell tale sign is a downward clawed leaf tip which will not go away. So I don't think you were over doing the nitrogen to begin with because I don't see the claw in your pic. New growth is generally a lighter shade of green but if it has gotten lighter from what you had before then it can be a sign of a nutrient need. Nitrogen deficiency will start at the bottom of the plant so if the bottom is still looking good it is something else.
the plant is acapulco gold from barneys farm
if i remember well the leaves of new growth was more dark green. i will wait to see tomorrow ..maybe could be nothing...
 
I would give it a week before worrying. Plants move slowly.

They don't look too light in colour, it's just a big contrast with the toxic dark green.
 

akaki

Well-Known Member
in second pick especially the top leaves have two kinds of green color a darker and a lighter one...in the same leave...
 

Bugeye

Well-Known Member
the plant is acapulco gold from barneys farm
if i remember well the leaves of new growth was more dark green. i will wait to see tomorrow ..maybe could be nothing...
I grew the same strain indoors this summer. Mine was a bit of a runt but went absolutely ravenous for calcium in mid flower. I don't see signs of calcium deficiency in yours but keep an eye out for it later in flower. Good luck!
 

akaki

Well-Known Member
I grew the same strain indoors this summer. Mine was a bit of a runt but went absolutely ravenous for calcium in mid flower. I don't see signs of calcium deficiency in yours but keep an eye out for it later in flower. Good luck!
i had calcium issues too but at veg stage.I using led lighting some say that led cause mg/cal def.
thanks i will keep an eye!!!
 
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