mmh sorry, bit lost right now...
no the nutes in this stuff are time released but released unevenly. if you got now this soil-mix quite moisted the stuff speeds up and even more then normal is given of into it and this kills plants as you can see. if you know add even nutes to this you heavily over-nute.
the fix to it is to dig the plant out, wash the shit carefully of, floated it off if possible, and plant it in a good soil mix with perlite.
if this is done wait a few days before you start to nute lightly-that can wait for a week or two depending on the plants size and strain. for the first days pH'ed water is more then enough