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What could be causing these spots and burnt tips?

Lol_You_Lookedstarted grow question 2 years ago

I noticed this starting this morning, the pH was 6.3 and 210 ppm. The water was about 7-10 days old. So I figure water change time?

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Leaves. Tips - Burnt

Leaves. Color - Mottling

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Robertsanswered grow question 2 years ago

No your pH is too high. 5.8 is for vegging. Your ppm is pretty low. I start around 500 ppm,I also run first solution 3 to 5 weeks.

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