Hey guys, I noticed that strange yellow spots appeared on old leaves. What could be causing this?
I'm using ebb & Flow hydroponics
Solution:
Hesi PowerZyme 1 ml/l
Hesi - SuperVit 0.01 ml/l
GHE - FloraBloom 1.25 ml/l
GHE - FloraMicro 0.65ml/l
pH = 5.65
ppm=430