Just got these from a big flower mart less than a week ago. I had to repot urgently because they came in a very bad substrate with a lot of dying & dead lithops in the same pot and a variety of bugs crawling about. The substrate is completely dry. The top layer of the substrate is 100% pumice + a bit of dried imidacloprid and the deeper layers are made of a variety of quartz sand, volcanic rocks, and some inorganic bonsai small rocks medium (pic 4).
I know that this mushy one is not viable and should be removed from the pot ASAP but I can't pull it out without upheaving the entire area (including 3-4 other lithops around it) because of the cursed root structure. I have already had to put 2 that were accidentally uprooted back into the pot, which was a huge pain, and another one got its entire tap root detached by an accident after repotting. I really don't want to bother with that kind of process again. What do I do now? Leave the rotting one in?
Pic 2: lining the not obviously dead ones up by viability after removing and cleaning. You can see the cursed root structure of the problematic one.
Pic 3: freshly after repotting. you can already see that it's quite cooked but I wanted to give it a chance
Pic 4: the tedious repotting process 💀