Brown Spots On Young Leaves

Can someone tell me what this is please????

Looks like rust stains on the leaf.... The babies are in veg and I am not sure what sort of deficiency this is...

Looks like Manganese diff to me.. They might want some more nutes and or lower the ph..

Check the pictures here, looks like a possible boron def:

https://www.rollitup.org/marijuana-plant-problems/216537-self-diagnose-your-plants.html

Thank you for your quick reply guys... Really appreciate it... And thanks for the links....

Laceygirl....