What deficiency is this

[Slim6969]

So I’ve seen this before but only on auto flowers that I’ve grown

this plant is a white widow auto fem. grown In dwc using general hydroponics flora series ph is 6.2

the spots on the leaves get darker and darker and consumes the hole leaf eventually

any help is greatly appreciated

 

[Apoc]

Looks like Cal/Mag but get another opinion or two

 

[Slim6969]

Looks like Cal/Mag but get another opinion or two

That’s what I was thinking as well but I’m quite new lol

 

[Apoc]