I just developed CMS 20 with perceptol and exprienced some really strange shit:
- i do pre wash with agitation for two minutes with water, before developing film. Never had issues. After spilling it out it was all muddy looking and not clear as it normally looks
- the fixer and developer turned out pink. never in my life did i have a result where two chemicals turned out pink - see photo

- THe roll itself is chrystal clear - see photo. Thgat too has never happened to me
Film is drying right now, will upload images asap.
https://imgur.com/a/rPHuw
Edit:
heres the first batch of images, shot in P mode
https://imgur.com/a/KwVA5
Nice results Odot - you've shared via imgur.com. ! ! !
1) the Zeiss Biogon 35mm F 2,8 is a lens of a group of lenses wich is the right one.
I can't affort it.......

.
2) don't care about the colored water from prewash. Don't care about the pink
developer and pink fixer.
It comes from the antihalation layer.
To explain : Rollei's recomandation to ATO 2.0 (comming from the origin also from Agfa microfilm family) is to have no prewash. I can't say if it is also with Adox
CMS 20 recomanded.
But we may speculate it should be the same procedure there.
But Rollei stated also if you don't like the coloring of baths you " MAY " prewash the film - so it is just on you.
(the coloring of baths should have no impact to the developer and following baths)
From your workflow with deluted Perceptol one shot it is no problem at all because you give the Perceptol away after developing the film.
A pinky colored fixing bath looks not so good because it may indicate : " something is wrong " but same procedure : don't care about.
But notice : With "Spur" special developers or other special stuff from Adox I would care about - just from personal sugestion - because with such developer types you should handle an extreme correct workflow.
Some are using a seperate drum to avoid
chemical conflicts possible caused from minimal rest chemicals of other developements onto the surface of the drum plastic. That might be a "Voodoo"
workflow - we all may speculate if THAT should be nessesary but I was reported about.
At last my workflow to avoid the coloring:
It is not nessesary to longer the prewash. I prewash several steps. But I didn't longer the prewash (4min. with all steps)
Notice this microfilm types are very sensible from the emulsion surface.
4 min. should be the max. (with extreme correct temperature) therefore.
First prewash step 2,5 min with NO agitation.
Second step 1 min. with moderate agitation (10 sec. intervals)
3. step 5 seconds 4. step 5 seconds.
a.s.o till the prewash water comes clear.
BON CHANCE