A Couple of Yellow Leaves on Plants Sulfur or Nitrogen?

[Canes1]

My plants have been getting occasional yellow leaves , usually on the bottom. Not sure if it is normal or not but after looking up deficiencies I came up with either Sulfur or Nitrogen.

Any tips or help would be great, I just don't want to start dumping nutes on it for no reason.

Thanks

 

[moruga welder]

whats your fert. consist of ?  too much water ? also natural to drop bottom leaves ( some older )   

 

[Canes1]

whats your fert. consist of ?  too much water ? also natural to drop bottom leaves ( some older )   

Foliage Pro ferts and most if not all are older leaves.

It's not to widespread but just figured I ask before it gets serious.

 

[moruga welder]

i wouldn't sweat it . 

 

[Capsacin-junkie]

Honestly the most common reason for yellow leaves is overwatering. Watch how much you water

 

[Topsmoke]

poor drainage or over-watering.