Water Mark(salt on leaf)

[Seriesnuns]

Anyone have an idea what’s causing these spots?

Mesphito Grapy Walter grown in FFOF getting balanced water and weekly roots organic bloom top dressing. Plant looks healthy as a whole. Wondering if it’s salt from my tap water..

 

[1diesel1]

Definitely residual from what ever your spraying on the plant.

 

[Jimster]

I guess it could be minerals left over from evaporated tap water, but the water must be pretty hard! Where about are you located? Probably not going to need Cal-Mag anytime soon!!:D

 

[MIMedGrower]

If residue why is it only at the tips of the serations?

 

[Ina]

If residue why is it only at the tips of the serations?

May be that's why.....

 

[Seriesnuns]

Interesting! Thanks

 

[MIMedGrower]

May be that's why.....

Thank you for this very creative explanation. :)