ping soil i use is the one recomended for mex pings by the ping
study group. by volume: 2 parts corse perlite
3 parts corse vermiculite
the only thing is i like it so well i'm now using it for all my ping's
and some of my _Nepenthes_ also.
if you need anything else doug let us know. to me its greenhouse
insurance and now is premium time!
kevin