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what causes the yellow ish leaves?

Bili_R
Bili_Rstarted grow question 21 hours ago
worried about the leaves. ph problems or lack of nutrients? darker plants=indicas yellow plants=sativas.. ph drain 6 to 6.5. tap7.5. did not check the ph of the feed. our ph pen sucks. Week 3 is most problematic every grow for me... I would guess high ph normally..
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Week 7
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BerrySweetHigh
BerrySweetHighanswered grow question 20 hours ago
Hello Bili_R, You did answer your own question. Order a new pH pen, the cheap chinese ones will do for cannabis. Make sure to water till at least 20% runoff when you water the first time with the right pH. And one more thing, measuring the runoff from soil is useless. You need to do a slurry test if you want to measure the pH from the soil. Just google it and you will find how to do this. Happy Growing Buddy! 💚
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modmyplants
modmyplantsanswered grow question 20 hours ago
Hey mate, yes your guessing right. Thats a slight nutrient lockout due to a wrong pH. Your plant cant take up the nutrient it wants, because your pH is out of range. You can use citric acid to lower it, when i dont have ph-regulator i simply use lemonjuice. a teaspoon lowers the ph for around 0.5 on 1Liter. Happy Growing, dont stress it👍
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