Hi D,
Your Kratky setup looks excellent - and the produce superb!
I have dabbled with various forms of hydroponics and a little bit with Kratky method ... living off grid with solar power does demand one consumes the least power so Kratky is ideal for that. But I do find plants love as much oxygen as possible and grow ultra vigorously with extra oxygen provided by small electric fish tank pumps and air stones. Do you use any air pumps at all?
Your setup looks phenomenal - Congratulations!
Upvoted and resteemed :D