Phals in SH

[AnonYMouse]

Can someone tell me what I'm doing wrong with Phals in SH.

I have two Catts doing great!

I did the same for two Phals. One died (NoID "Equestris") with roots looking like a bundle of mini-sausage casings. The other, a hybrid (admittedly was not robust looking with various lengths of roots and a few root stubs-borderline juvenile/fledgeling) I just repotted conventionally. On both plants, switching to SH seems to have disrupted the root stubs from growing.

Actually, it may be monpodials thing because a Neo failed the same way.

I'm liking how the Catts are doing in SH and would like to do the same of many others. What am I doing wrong?