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rust-colored spots

OGbrosstarted grow question 3y ago

Hi, I noticed those rust colored spots on some leaves. What it could be? Day 40 flowering (hydro)

OGbros

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Leaves. Color - Dark-brown

Leaves. Other

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GrowingGrannieanswered grow question 3y ago

Ok.. I took a look at your diary and will suggest you need to raise your pH just a little bit... I grow in DWC so I understand 5.9pH is considered good - but for calcium to be absorbed, the pH needs to be a little higher - 6.2 minimum. And get back to giving her nutes... unless the discoloration on the edges of the leaves is expected with this strain, you might be looking at a potassium deficiency soon... 6.2 will also be the minimum for phosphorus absorbtion and will do very nicely for potassium. Good luck!

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