Another unhealthy lophophora?

[imPsimon]

I bought this cactus which I think is a lophophore W caespitosa (correct me if I'm wrong) some week ago and I
can see that it's a bit yellow and cracked here and there.
It's also quite pale

Mites?
Can anyone identify the problem?

 

[Ufostrahlen]

Yes, mites. Spray the crown (not the soil) with ethanol or propanol. Also repot the Lopho from an organic soil mix to a mineral soil mix in a bigger pot.

 

[imPsimon]

Ok, thanks!
I have started to spray it yesterday so hopefully it will heal in some weeks.
Isn't it to late in the season to start repotting?

 

[Ufostrahlen]

Isn't it to late in the season to start repotting?

Nah, I don't think so. You probably keep them indoor at 21°C, so I don't see any problem with repotting them now. It's a little late for fertilizing, but then fall/winter/spring is a long time, so I'd suggest at least fertilizing them with a mild solution.