it is strange ... as if it were at the end of the flora, but it is still halfway there.
It looks like you're hungry, but the food is strong (≃ 1,500ppm floranova bloom / supa silica / liquid kool bloom / calimagic)
a friend gave a suggestion: try 50/50 FNG/FNB without anything else ...
today I had to do a flush... entirely. were 20 liters of water with 20 ml of florakleen. The reason: measuring runoff shown ppm as high as 3.250 and PH as low as 5.41 (on turfa/vermiculite). After that, I gave 2 liters of nutrients (PPM 800/PH: 6.80)... Runoff now shows: ppm 700/ph 6.01.