Yellow on fan leaves in veg

[marvgk]

Hi All,

I appreciate any help I can get. I fed this plant nutes 3 feeds in a row. Versus my normal F,W,F,W. One day after a water feed I noticed yellow spots on the fan leaves. New growth and old.

Any ideas

Thank you,

 

[MrSauga]

It looks like the start of mag def. Maybe high in N with the nutes causing more demand of Mg. If your pH is fine then add some calmag or a magnesium supplement and you should be back on track.

 

[marvgk]

thanks,

exactly what i was thinking. next water should be tomorrow.