Leaf Septoria developping?

hinterhofgrowerstarted grow question 1y ago

Leaf Septoria developping or Ca deficit what do you think?

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Week 9

Leaves. Other

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Mr_Weeds_Autosanswered grow question 1y ago

Looks more like a calcium deficiency to me than leaf septoria. The rusty brown spots on the edges and between the veins, along with the yellowing, are pretty classic signs. Septoria usually starts as round yellow spots with defined brown centers, and it usually begins on the lower leaves, not mid-to-upper like you’ve got here. I’d double-check your pH, especially in soil—if it's outside the 6.2–6.5 range, calcium uptake can get blocked even if it's present in your feed. A cal-mag supplement should help stabilize things if you're not already using one. Also, make sure your roots aren’t stressed from overwatering or compaction, which can also mess with calcium uptake.

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Mr_Weeds_Autosanswered grow question 1y ago

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ChitownCannaChicaanswered grow question 1y ago

What color are the stems? Red? That will be an indication of lock out or deficiency. Keep in mind, that all deficiency that show are 2-3 weeks lagging. Sometimes no corrective action is needed as it was taken weeks ago.

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Ratleanswered grow question 1y ago

Between week 7 and 8 on your diary she took a nose dive. If all the basics are met I would say it's lockout for her to turn so quickly. She does need cal/mag but it won't help if locked out. In many of your photos she's had drooping leaves, could be from having just watered . Just make sure of the basics. lights, temp, humidity, pH, airflow

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Hashyanswered grow question 1y ago

If your growing 24/0 then I'd suggest a rest period of 4 or 6 hours of darkness, I'd also on next watering do a slower water with plenty of runoff and measure the runoff ph to see what the actual ph of the grow medium is, you may find that even if your putting in the correct ph it may be coming out way off.

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Ultravioletanswered grow question 1y ago

So far you have only used autoflower supermix mix along with a PK bloom fertilizer. grow or bloom mixtures normally do not have calcium and magnesium added as tap water can have enough of both already. Leaving the decision to the grower and how they water. I can tell there is slight salt build up as damage on tips of leaf is from osmosis related to high EC. Flush to remove excess buildup then reapply balanced fert with extra dose of calmag see how she does. It would also help to check your PH if your plant is lacking 2 of the big 3 cations then your PH will most likely be closer to 6, you dont want it ever touching the 5's make sure to keep an eye on that too.

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All_our_small_plantsanswered grow question 1y ago

So for me, it looks like a calcium deficiency, leaf septoria looks a bit different and ends with black spots. For you, it looks like calcium or it could also be a nutrient blockage, check the runoff if you have one. If your pH value is outside of 5.8 and 6.5 or if you have an EC value higher than 2, it could be that you're slowly entering a blockage. But as the primary cause, I would stick with calcium since you're using PK fertilizer, the blockage could be a second possibility. So give CalMag once and then check the runoff and if necessary, water with adjusted pH water without fertilizer.

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