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Brown spots in old and new leaf

BrazilianKushstarted grow question 3y ago

Day 65 of vegetative Rh 45 Air temp 22 celcius 9 liter pots Fert : jacks 321 1250ppm 1x week 700ppm for clean Always measure ppm that comes out The only control o dont have 100% is PH. Im usying paper stripes so i dont know for sure if im giving 5.5 , 6.0 or 6.5. I

BrazilianKush

BrazilianKush

BrazilianKush

BrazilianKush

BrazilianKush

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Leaves. Edges burnt

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Robertsanswered grow question 3y ago

It is potassium related. Not enough. I have experienced this in longer photoperiods vegging. Potassium is the most important nutrition in a plants life. Vegging npk ratio is 3-1-2. Flowering npk ratio is 1-2-3

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