Aphids?

Have you noticed any kinds of residue on the plants, sticky patches, eggs, powdery white clusters? Seen any bugs wombling about? If you haven't seen any of these symptoms, the others are likely right and it's a nutrient problem you need to address. However, if you have noticed any of these things, during flower it's crucial to be careful. As pests can easily destroy a harvest, eating all the nutes and stunting growth, it's good to treat the issue with Neem oil. But no matter what do not get it on your buds. I had a similar issue during flower found some random egg patches and similar leaf damage, had to apply treatment manually not to get anything on the buds or the taste of your buds will be ruined. It takes time and dedication and monitoring, if you notice any eggs it's best to remove the leaf. If it's not pests, well then gotta be a nutrient issue. Wish you the best of luck in resolving the issue and happy harvest 🙏🌱

Not aphids.............crappy pictures, but it loooks more like a lack of potassium issue.

Looks more like a deficiency to me… in my opinion some CalMag issue from what I experienced, but hard to tell from only few pics. Try to adjust EC & PH, guess this should solve the problem.

Doesn’t look like aphids to me. I don’t see any typical signs like sticky residue, small bugs, or deformed new growth. The leaf edge discoloration (especially in pics 1 & 2) looks more like a light nutrient deficiency or uptake issue possibly potassium or magnesium, especially during flowering. I’d check your root zone pH (aim for 6.3–6.8 in soil) and your watering routine. If you’re using organic nutrients, consider adding a bit of CalMag or something like Bio-Heaven next watering. Keep an eye on new leaves they’ll show if the plant is recovering. Good luck!

P lockout if u're feeding it enough or deficiency if u don't hard to tell only for 1 leaf xD

Thats not what aphids look like. their are tiny little fuckers and they come out in numbers. they stick to the stems and bottom sides of the leaves and they suck out the juices, they produce "honeydew" as a waste product and its legit just sugarwater and shit from their system. Ants love it. make the other leaves sticky and glossy and attracts other pests at the same time. The pics are not in focus but looks to be issues with P with the purple coluation of the leaves. and the other bits could be issues with K deffencity but might be other things. https://420life.com/wp-content/uploads/2021/10/Marijuana-Leaf-Deficiency-Chart-scaled.jpg This leaf chart can help out a bunch. Give it a look see and look at your feeding program and see if it needs any extras. or maybe just a bit more runoff if you get that.

Sehe keine blattläuse eher ein Problem mit den Nährstoffe, was hat du für einen PH und ec wert? Mess mal den runoff der PH wert solte so zwischen 5.8 und 6.5 liegen un der EC wert unter 2, kriegen sie dünger?