Brown spots and yellow leaves

[bubby]

Here are some pics I hope you can help a new grower,it’s afgan plant 6 months old I use fox farm nutrients and followed the schedule this is what I got

[fano_man]

Looks like calcium and some magnesium deficincy
Do any leaf tips curl or twist upward?

[Carpenter]

I’m with @fano_man, calcium of magnesium deficiency! Welcome back!!

[spankyjr1]

I would also check soil PH if it’s off it can cause poor uptake of nutrients