Emilya Green
Well-Known Member
since you have not given any other nutrients other than the calimagic, it has to be that dosage that is what upset the plants. There is a bit of N in that stuff, hence its 1-0-0 rating. As others have said, clawing like that is typical of Nitrogen toxicity, or at least has given you a warning that it has occurred. FFOF is already quite high in available N, so this dosage of calimagic took it over the line. First, I am not sure that calimagic was called for yet, and certainly not in the dosage you gave. I am a fan of giving a calmag/iron product early on as a preventative, so I don't think any harm was done... the plant just told you in no uncertain terms that it was a little bit too much... maybe go with a half dose next time, and of course, watch that pH.