To answer your question from your other thread.
Flood and drain, ebb and flow, you cant really water too often, its maybe wasteful but the main thing is they are getting nutrients and they are get fresh o2 when they drain.
As for yellowing tops, looks like its in fast growing mode and its the less mobile nutrients not keeping up with the transition. Its normal. At least thats what it looks like from your pics.
Oh and 2EC is way overkill, especially in a situation where plants are getting watered so often.
Again, doesn't seem to be doing you any harm, just a bit ott