I agree Ali, well actually if a species is known to have a highly sensitive root, then we just mention it. No one has made a Bicalcarata cultivation guide though, so we can't put that in yet, and I am not experienced enough to make a Bical cultivation guide.
I agree with nepnut about repotting, I do exactly that, I'm really paranoid with root sensitivity.
I have a Bical x amp I forgot, anyway it's a bical hybrid, that looks like it might have inherited it's Bical root sensitivity.
TTFN
Arvin