Whats wrong with my leaves?

Google leaf septoria. It's a fungal infection on the leaves that spreads.. you just need to be proactive and remove the leaves before it spreads to other leaves.. if you can.. clean your tent with some bleach. I wouldn't it use the leaves for anything sadly... In my findings this is the most overlooked issue and is actually more common than overfeeding. If you go outside look at leaves in every tree.. you won't find one without it