Im sure 6.8 is ment to be runoff for soil not hydro. hydro is ment by be at around 6.
Ah ha found it "You want around 6.0-6.5 for a soilless mix, or 6.3-6.8 for soil."
But that looks similar to what i had when i over neuted them only last week, flushed them through and there on their way getting better now
tomcromp Reviewed by tomcromp on . light green spots. Pics! Ok, two of my plants have been starting to show some light green spotting and the leaves with the spots have curled into a taco like shape. PH is right around 6.8 and nutes are at 770. I'm going to mix up a new batch of nutes today because I had a water spill with the draining and I'm now low on water in my res. That and I need to add two more buckets to my system. Rating: 5