I have to ask you all a question:
what the hell are those black dead worms?
I'm sure they're still I'm not sure they're dead ..
the roots are fine, do I have to do something?
Take one out and investigate a bit. A pic of a single one closeup on a plane surface would help. If they are alive it can't be a good thing.
https://www.rollitup.org/t/small-black-worms-on-roots-dwc-rep-for-successful-identification.471958/page-2