64 day old autoflower possible magnesium deficiency

[halfnatural]

I believe this is a Magnesium deficiency, just wanted a confirmation. I've already treated with epsom salt and believe it stopped spreading. You can't see it in the
photos but the end of the yellow leaves are curling upwards.

 

[Grey Bear]

I think your good bud.
Those big leaves are at the end of their usefulness. You can cut them.
I could not see any problem on the green leaves.