Leaf problems even after reset

[Steelkiltjones]

Hey y’all, any help would appreciated!

first time in DWC.
RO water
Ph 5.8-6.1
Fox farm nute trio (at about 1/2 power)
Cal mag

the problem is worse on lower leaves but pretty random

 

[ComfortablyNumb]

Cal-Mag. You need Calcium and Magnesium. Get some Cal-Mag and dose them but not too heavy.
Your pH should be closer to 6.3 if possible to avoid nute lockout.