BUrn spots on leaves?

5 weeks flowering on my deck, its been raining the past couple days and they have been under a table. I just cant seem to think what is causing these burns. Any help please!

mag/cal? maybe

Crispy leaf portions is usually a Phosphorus deficiency. Seems to be the most common problem people have. You should also make sure no water is dripping on it from a dirty or rusty place above.

mine look the same way everyones tellin me iron/mag def.