Leaf Symptom

[Vitreous]

So I come home and notice this! Any thoughts?

 

[ellz]

Looks like a calcium deficiency. More info can be found here: http://www.growweedeasy.com/calcium-deficiency-cannabis

 

[Burny]

What does the whole plant look like? Something like that could just be some type of bruising or many other things. It is really hard to tell by just looking at 1 finger of one leaf. Are there any other affected areas? Need more info.