some of my plants are dieding i added salt to the tank to to remove ick ehats going on??

You should always remove live plants when salting your tank - especially to 0.3% as they will die. I'd place them in a tub of fresh water and some fertisizer and see if they'll come back.

what can i use for fretilizer???/

The product I use is Seachem Flourish Excel. This stuff is excellent

thank you very much