Buds zu klein nehmen nicht an größe zu

without information on what you feed, it's difficult to answer. any and all problems can be caused by concentrations, ratios or pH being off. You labels and some applied algebra would help you determine if you are not providing somethign better than a leaf symptom will as they have numerous cuases for the same things you see. So, if you have been regularly feedings, i'd back off for a bit. irrigate with pH'd water until you dilute what you have feed and see how it reacts. If it immediately yellows and spirals down noticeably within 24 hours, stop doing what i suggest, lol. Otherwise, stick with it and see what happens. proper watering techniques can help too. Water with 10-20% runoff and you will help avoid buildup of nutes. Wait for top 1" to dry before irrigating or fertilizing again.. always the same methods regardless of which you apply.