Why is it yellow? this leaf is turning yellow ? And having black dots ? Any idea ? Help please !

Lots more information is needed in order to properly diagnose. Read this post so you know what to include:

https://www.mrgrowit.com/forum/grow-community/read-me-first

It would help if you added alot more info my friend how old genetics auto or photo how old soil or coco any nutes you have fed light size and distance ph and ppm runoff im still new on 3rd grow but if you add everything you can about your ladies the community could help you alot easier happy growing my friend