These pics are of the SSH again which got nute burned. These don't look to be coming around as good as the CB although all were flushed thoroughly for 10 days minimum. Since then they have been getting watered every second day & a very mild does of Superthrive .5ml to a gallon every third watering.

Any suggestions on how to save them are welcomed although I think it could be a case of starting some new ones.

EDIT: The water is out of the tap PH tested at 6.6 the run off water from the problem plants is CB = PH 6.7 & both SSH = PH 6.8