Lemon Thai Kush / Power Plant

Week 7 flowering, They are getting yellow, the last two weeks to go! The white hear turning into brown, next week I will look with the microscope if the trichoms are getting milky and finally brown! Now I reduce my nutrient solution slowly to zero! Today my friend send me some pictures and we don’t know what’s wrong, he bought some cuttings few days ago and now they are looking worse! Maybe you know what’s wrong? See ya next week