Looks like iron excess. Are you using tap water? It might be kind of hard. The other thing that comes to mind is a minor element lockout due to P or K excess.
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BlackJack GG#4 Napali Pink
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2Indoor
Room Type
Grow Conditions
Week 5
Vegetation
78.74
cm
inch
Height
18 hrs
Light Schedule
13+ conditions after
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Nutrients
ml/l
ml/gal
tsp/gal
5+ nutrients after
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Our Black Jack was suffering from some burning in the leaves, we think it might be a lack of magnesium but we did let medium get dry a bit so that also could of been a reason. We also added a scrog net and pushed down on the branches so they can stretch sideways and support the weight that is yet to come. And now that the scrog net is up, they are entering the first day of flowering.
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Grow Questions
SkankyHobostarted grow question 5 years ago
Please help us identify the deficiency going on with the blackjack. This is our second time getting the exact deficiency and we are unsure as to how.
Solved
Leaves. Color - Mottling
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Athosanswered grow question 5 years ago
Looks like iron excess. Are you using tap water? It might be kind of hard. The other thing that comes to mind is a minor element lockout due to P or K excess.
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Athoscommentedweek 75 years ago
SkankyHobocommentedweek 75 years ago
This honestly might be it. Didn't know water could be hard, so we checked my local city water quality. Not the best, we asked our local hydroponic shop what we could do. Apparently, leaving the water out for at least a day lets the chlorine and such naturally evaporate away. A bit inconvenient but gonna start doing that and see if it makes a difference.
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