It's my first time grow a plant, 20% coco and 80% pot soil. Outdoor. It stop growing about 10 days ago, and started showing signs of yellow leaves. I used some liquid nutrients two days ago, and NPK improved from 3-4-11 to 5-6-16. Temp : 26c~32c, Hum: 60-70%. Can someone help me identify what's the problem please?