Auto Gandalf's Pipe | In new box

Day 51: It is not clear why this happened, feeding is very small, maximum 430 ppm (yes, this is very little, because of this the leaves from below gradually turned yellow, but not like this). A very unpleasant situation, having poured water to the drainage of 5 ppm, the outflow was 68 ppm. Day 52: The situation is only getting worse. I have read a lot of information, but I still have not decided what the problem is. Therefore, a decision was made to start feeding simply according to the table and only water with fertilizers (and not mix water with fertilizers + regular water to reduce the concentration). Perhaps this may be due to the fact that some element has become critically low and because of this, some others have begun to be blocked.