Rust-colored spots on the tips. Autoflowering outdoor in the second week of pre-flowering. What could be the problem?
CharlieilBrownstarted grow question 5y ago
I watered yesterday with water only (PH 6.5 / 7 ) and I fertilized 4 days ago with BioGrow 2ml + BioBloom 1ml + Top Max 1ml + ActiVera 4ml (in 2 liters of water) (PH 6/6.5). This morning a couple of leaves have started to turn russet tips.
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Leaves. Tips - Burnt
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sir_isOanswered grow question 5y ago
Yeah maybe lower your biogrow, raise the biobloom a bit.
It is likely a pH related reaction, especially if you use something close to "soilless" (lots of coco, perlite, etc). As typical, heavier soil buffers quite well.
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CharlieilBrownanswered grow question 5y ago
Yes I'm not particularly worried, I would like to understand if I am doing something wrong, whether to stop with fertilizers or to continue. I also thought about the fact that when I water only with water the PH is higher than about 0.5. Could the problem be this fluctuation in PH between fertilization and normal irrigation? Or maybe I should cut BioGrow to decrease nitrogen? The plants started flowering almost two weeks ago.
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bbbgrownoshowanswered grow question 5y ago
leaves look good. I wouldn't be too worried. you about to flip?
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