dumb mistake killed my plants, help me decide how i should rescale

Hi everyone, around 3ish months ago I started to test around 5ppm of nitrites in my tap water that led to deaths in one of my tanks. I was forced to switch to Ro/DI water and unfortunately did not add any nutrients for the first months. I started to notice all my plants die off around the 2month mark and began to realize my mistake. Now I have been continuing to add ferts and trace elements whenever i do water changes but I don’t think these are gonna grow back. Any suggestions on some new plants big n small? Before & After pic