is this cal/mag def?

Im pretty sure thats what it is, just want a couple more opinions on it. If i add a little Cal/mag theyll be fine? Its on both my plants(skywalker og & Bruce banner) just a couple bottom leaves. temps are in the low 70s 60% humidity.

here are some pics.

That, or splash-up burn from getting water & soil on the leaves when you water....
a shot of Cal Mag never hurts!

As you can see the top canopy has no deficiency, do to the cal-mag deficiency starts from the bottom up!

Hit it with some cal-mag, and see if the effected areas start to show promising growth, it may not heal 100% but it will look healthier!

Ghost

right on yall thanks for the feedback. will add a teaspoon of CalMag. figured thats what it was just wanted somone elses input.