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Light burn?

Tckfui
Tckfuistarted grow question 3 years ago
Thought this is light burn from 25% milk spray to address PM. Treating another girl besides her the same way (the one with PM) and it looks fine. FF cocoloco living soil. Tap water left out 3 days ph 6.7 40 ppm. Added calmag and chaching things have gotten worse. Top fed Dr eart
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Week 8
Buds. Other
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CRiSPrGrow
CRiSPrGrowanswered grow question 3 years ago
Hi there Tckfui, this looks like calmag deficiency you're right. this you can see from the newer growth being affected first and the fact you have been adding a bit more in the spray than usual. You know that absorption rates in the leafs are 80% efficient compared with absorption in the roots which is only 20% efficient. so it became a (pretty rare but possible) Mg lockout. If you can try to flush, go for it. water until runoff, then add 20% more water. Then skip Mg for one or two waterings and add it back again. Some genetics or phenotypes are just a little more sensitive than others , that's all. hope this helps ! 🚀
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Ezzjaybruh
Ezzjaybruhanswered grow question 3 years ago
I’m not prepared to issue a sure thing - looks like micros. But you realize coco loco has absolutely no nutrients and is not living soil? Or are you saying a mix of living soil and coco loco? Either way coco pulls calcium, magnesium, from the feeds you do because of its CEC. I tried dr earth top feed 2-2-2 and was unimpressed. Maybe time to get some immediately available micros and NPK in that medium.
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Roberts
Robertsanswered grow question 3 years ago
Potassium deficiency. Could be ph related.
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