I have had these 2 san pedros for about 2 years. They have not been well looked after.
I was planning re-pot them into larger pots, also to cut the skinny sections off and to repot them.
About 2 weeks ago the one in the first picture stared getting blotches on the skinny section, it got worse and spread leaving behind what looks like sunburn.
That dark spot has been there for a while now, before the current problem, not sure what it is.
This same cactus has these little black guys on it
They have been there for ages, and appear to be coming out of the soil. I have never been able to find out what they are.
So I basically want to know how to proceed, back to a healthy cactus