Was stimmt hier nicht

That's normal. You've flushed all the nutrients out of the soil. We're almost at the end. They need nutrients again. Either a mineral quick solution or just leave it and water normally.

forgot to say in flower you may need 100-110 N ... a little drop is likely needed.

forgot to say in flower you may need 100-110 N ... a little drop is likely needed.

should never have to flush in coco.. means you are feeding too much, if you do. soilless -- 10% runoff waste water from each fertigation. Always fertigate. 1.2-1.5EC concentration at roughly 6 pH. good quality soilless nutes should be ph-balanced on their own. Avoid this hassle and buy a product that ph-balances on its own, lol. n 120-13 p 60 k 180-200 Ca 100+ Mg 50-75 S 100+ good ballpark ppms for each... this avoids any differences between US label standards and those of your region. phone apps and online ppm calculatores can take the guaranteed analysis label information and spit out PPMs.

Hey, So I know from the flowering phase that no nutrients are given to the leaves, causing them to start dying off. If you say you've flushed, then there are even fewer nutrients in the soil now, which speeds up the process. But I wouldn't try to counteract it with fertilizer now since you're already late in the flowering stage, and that would have a negative effect.