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Brown leaves and curled small leaves right above the cotyledons
Mr_Incognitostarted grow question 2 years ago
On the next day after watering with 0,75 ml/l PH Perfect Grow, Micro, Bloom and 1,5 ml/l Voodoo Juice, B-52 the second row of the leaves (three fingers) became partially brown and the newest lower leaves above cotyledons curled a bit. Can it be some kind of nutrient burn?
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Mr_Incognitoanswered grow question 2 years ago
I came to conclusion that this is Calcium deficiency caused by too soft bottled water that I used. It has only 43-65 mg/l of Ca2+ and mineralization 0.23-0.35 g/l. Also, I was giving less than half dosage of nutrients recommended for this stage of growth and probably in combination with soft water this caused the problem. Next time I use tap water and give a bit more nutrients to compensate the lack of Ca/Mg. Unfortunately I have to possibility to buy a PH-meter or any PH-paper at the moment, but I hope PH is optimal because I use PH Perfect mix. Thank you all for the answers!
Disn00fanswered grow question 2 years ago
Nothing to worry about. Those first leaves get discoloration sometimes.
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GrowingGrannieanswered grow question 2 years ago
Oh - and those little leaves? They're cute, don't do any harm - but there's no harm in getting rid of them, either!
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GrowingGrannieanswered grow question 2 years ago
Yup... rather classic nitrogen deficiency going on here... you might consider a foliar spray to get the nutes to the plant really quickly. If you don't address the problem quickly, it will spread... the leaves will become crispy and die and the leaves going up the plant will start showing these signs, too.
Good luck! The grow looks really good otherwise!
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