They are OK, just a bit stunted and root traumatized I think,... I'm not familiar with this brand or know of any grows using it so far to measure by,... flushing is a no-no with such soils, you're tossing out the nutes in there,... And with only 1/3 of the pot in it, that's not a lot of nutes overall to begin with,....
Not sure if the tip claw/leaf bowing is from over- or underwatering? Did they get really dry before?
I'd start on a mild PK booster, Roots Organic HPS for example,...