Need advice. Strain: purple punch. Leaves are turning brown on

Can someone help me and tell me what is causing this.this is

These girls are looking great purple urkle auto flower

Week 7 flower what’s happened shall I cut my losses ? Been

Purple Haze Auto I Pulled About An Oz Off This🔥

Barney’s Farm Purple Punch and Dutch Passion Banana Blaze week

Purple Punch week 1 of flower 🌸 and already starting to stack

Barney’s farm Purple Punch and Banana Blaze week 3 of flower.

Update on my current grow in the tent!! Week 6 Flower (6 NTF

Happy Monday! Barney’s Farm Purple Punch 🥊 and Banana 🍌

Barney’s Farm Purple Punch and Banana Blaze Dutch Passion.

Barney’s Farm Purple Punch and Dutch Passion Banana Blaze week