Gelbe Blattspitzen

Hi Hab mir das diary angesehen. Auf manchen Fotos ist grüner Algenbelag auf der Erde, daher kann es A) pH Probleme wegen Staunässe sein. Heb mal den Topf an, ob Wasser in der Mitte oder Unten des Topfes ist am Gewicht, weil die Wurzeln noch nicht den ganzen Topf erreichen. Oder B) pH Änderung wegen Überdüngung ( Ionen K+/No³- etc, die sich im Substrat gesammelt haben). Das kann bei empfindlichsten Strains Auswirkungen zeigen, weil die Düngeschemata der Hersteller meist zu hoch sind, weil sie mehr verkaufen wollen und es bei optimalen anderen Bedingungen evtl funktioniert. Reduziere zumindest das NPK-Zeug um 30-50% Grüße

Zinc deficiency. A dose or three of a soluble trace element/trace mineral mix applied to the root zone should cure this quite quickly. Soluble trace element mix should be available from any quality garden centre.

Looks like a micro issue to me. From lack of it or wrong PH is the question. Some of the lower growth has burns as well but the kind I'm used to seeing from a PH drift. Wonder if this is still a thing and the cause of it all. https://420life.com/wp-content/uploads/2021/10/Marijuana-Leaf-Deficiency-Chart-scaled.jpg This chart can help you troubleshot it. I would look on the label and see what the magical breakdown of NPK/micro is for the plagron branded nutrients. I don't like their marketing or brand, misleading. Likely just need to correct one thing and the rest will fall into place. Best to start a diary so other can follow along.

Start your correction by flushing before anything. Not magnesium, that starts at bottom and moves up. Look up iron deficiency in marijuana images. Closest I come to your picture. If it is the problem iron chelated, oxides or sulphite supplements are fast absorbing. Both foliar and watering should be applied. In a pinch use rust water. Iron deficiency is often found in combination with Zn and Mn deficiency. If iron deficiency you may also have PH problems.

Could be a boron deficiency, but that'd be rare in soil.

Hey servus, mit wieviel PPFD belichtes du? Könnte Lichstress sein In der Phase würde ich so mit 500-600PPFD arbeiten :) Schöne Grüße

Hi bud. As the leaves are otherwise lush and dark green, I'm gonna guess it's an excess of magnesium turning your leaves that fluorescent color.

The most common nutrients that cause issues that show up at the leaf margins is potassium, magnesium and copper. The first two are complementary and work together while copper is a base micronutrient that isn't needed in large quantities. I also see a little bit of rust spots on older leaves that points to calcium. If you're not supplying any CalMag, you might consider it. If you already are, it's probably your pH.

You use tap water ? Maybe chlorines, maybe potassium excess, definitely too much of something. Doubt that its ph or light, most probably either wrong NPK formula, or excess of some elements in water by default.