pls help root rot? how bad?

flushed w/ h202 and washed w/plain ph water and h202 for 2 days...just changed res added neuts and hygrozem cause i use organic...1 plant looks kinda bad..any1 know if its worth keepn?

oh yeah they look kinda dark but i noticed the liquid karma changes res water very dark and seems like plant sucks it up into roots was like that before i got the slimey root rot

aww thats nasty man... see if you can cutt that shit off then do a rez cleaning and change...... add some peroxide....and pray!!!!! how does it smell?

dosnt smell at all both res changes water stayed clear after i flushed w h202 and washed slime off i got hygrozem in there now

oh the day i woke up and saw the slime i washed and flushed that day my roots always dark lookn tho and temp in tank under 70 that one plant just looks nasty what shld i cut off all of it? or just the nasty small shit?