can you say, are the roots going out into the mix?
if/when you re-pot/transplant use a base soil mix (no nutes) like if you get a bag of peat and a bag of perlite use 3 pts peat/1 pt perlite or, go ahead and do 2 pts peat 1 pt perlite and 1 pt EWC (your choice)
in the osmotic environment of the soil, the nutes will spread to the base mix much like flushing rarifies the nutes
if the roots aren't going out into your current mix, simply trans the rootball into the base mix leaving the toxic soil behind (yes you want to be careful not to disrupt the roots)
continue w/ another "flush" but less need to water to runoff (although a little runoff is still a good idea)
IF the roots are utilizing your current mix, there's no need to trans (unless you need to go to a bigger pot)
like you say, the plants are growing (so they may just grow out of this) you really want to minimize disruptions unless you NEED to get them out of the soil they are in (i.e. the roots aren't going into it)
BTW, i continue to recommend EWC or compost tea
if/when you re-pot/transplant use a base soil mix (no nutes) like if you get a bag of peat and a bag of perlite use 3 pts peat/1 pt perlite or, go ahead and do 2 pts peat 1 pt perlite and 1 pt EWC (your choice)
in the osmotic environment of the soil, the nutes will spread to the base mix much like flushing rarifies the nutes
if the roots aren't going out into your current mix, simply trans the rootball into the base mix leaving the toxic soil behind (yes you want to be careful not to disrupt the roots)
continue w/ another "flush" but less need to water to runoff (although a little runoff is still a good idea)
IF the roots are utilizing your current mix, there's no need to trans (unless you need to go to a bigger pot)
like you say, the plants are growing (so they may just grow out of this) you really want to minimize disruptions unless you NEED to get them out of the soil they are in (i.e. the roots aren't going into it)
BTW, i continue to recommend EWC or compost tea