Was könnte das Problem bei diesen beiden Pflanzen sein? Vielleicht liegt es am unpassenden pH-Wert?

Kattenstroth
Kattenstrothstarted grow question 1y ago
What could be the problem with these two plants? Maybe it's due to the unsuitable pH level?
Solved
Week 4
2 likes
Stony_German
Stony_Germananswered grow question 1y ago
Before you know what your nutrient program looks like, what water you're using, and what your pH is, I wouldn't rely on standard answers. It could just as easily be due to overwatering, which might not even be directly your fault. My buddy had similar issues with Compo soil, which tends to stay too wet and doesn't have as good drainage as Canna, Plagron, or Biobizz. And Compo isn't very pH stable. Go through the process of elimination. 1. Check if you're watering correctly 2. Check the pH Review your nutrient program and your water. Is your VPD in range? Too many unknowns for a good answer, buddy. I mean well and don't want to give you bad advice. 3. Provide as much information as possible in your next question so that more reliable tips can be given that really help.
2 likes
Complain
Selected By The Grower
BunnyBud
BunnyBudanswered grow question 1y ago
🔎 Symptom Analysis: 1. Image 1: The bright, jagged lines and spots look very typical for thrips infestation or leaf miners. It seems like something has "dug" through the upper cell layers. 2. Image 2: The irregular, pale discolorations with a silvery sheen and yellowish spots strongly indicate sucking symptoms from pests – typically thrips as well. --- 🐛 Possible Cause: Thrips Tiny, elongated insects (1–2 mm) that often hide on the undersides of leaves. They suck out plant cells, leaving silvery pale green spots. The characteristic lines are from their "movements" on the leaf surface. --- Secondary Cause: pH Level & Nutrient Availability An incorrect pH level (outside 5.8–6.5 in the substrate) can: Cause micronutrient deficiencies like magnesium, calcium, manganese. The symptoms sometimes resemble pest damage. Combined problems are possible: A pH issue weakens the plant and makes it more susceptible to thrips & co. --- ✅ Recommended Steps: 🔬 Inspection Examine the undersides of the leaves with a magnifying glass for small, quickly moving thrips. Check if you find black specks (thrips droppings). Treatment for Thrips 1. Neem oil (3–5 ml/L, emulsified with mild soapy water) – every 3 days for 1–2 weeks. 2. Predatory mites (e.g., Amblyseius cucumeris) – biological solution. 3. Leaf shower with water + a few drops of potassium soap (not on flowers!). 4. Remove the most affected leaves. 📏 Check pH & EC Measure drainage pH and, if necessary, the pH of your watering solution. Goal: pH 6.0 ± 0.2 in the substrate. For Biobizz soil, lower pH with citric acid or vinegar if too high (you mentioned the substrate buffers to pH 8). --- 📌 Conclusion: Very likely thrips, with possible pH stress as a trigger. You should combine pest treatment + pH correction. After that, the new leaves should grow healthy. If you give me the pH and EC values of your solution and drainage, I can suggest a targeted correction.
1 like
Complain
RasendeRollo92
RasendeRollo92answered grow question 1y ago
Hey 👋 Looks like a calcium deficiency to me. It's very common when growing under artificial light, right? If you haven't done it yet, give her a bit of CalMag & the problem should be fixed.
2 likes
Complain
John_Kramer
John_Krameranswered grow question 1y ago
nah it's Mg excess and Ca,P lockout how do i know it ? look at the tips and bottom leaves
1 like
Complain