Thanks guys!
It's really weird though, because I only give her about a cup a day, so it's really not much water. Nutes are mixed at 1mL per L of water still.
But look what I found:
According to this chart, there is synergism between Magnesium and Nitrogen.
This probably explains why Grapefruit turns out with a bit too much N, because I give her some N as part of her feed AND CalMag. So if I stop CalMag, it will reduce the amount of Mg and therefore of N too, if my understanding is correct. Only thing I don't want to is to run into a Calcium deficiency if I stop CalMag. Someone recommended to buy Calcium and Magnesium separately, rather than as CalMag. That way, dosage can be controlled for each mineral without having issues with synergism...
I've also noticed that clawing occurs mostly right after I feed, and then slowly 'gets away'.
I am so very impressed by how quickly she reacts to any change (be it a change in feeding, in temperature/humidity, or just a simple rotation...!), that's incredible.
Someone told me once that when I saw a deficiency or some kind of anomaly, it means that I am 2 weeks behind.
I'm sorry to have to say that but this is complete rubbish. She reacts to change within hours, if not minutes! :-O
I'm happy my girl is that flexible! haha
Peace,