yeah i know, actually i don't have a big collection and most of my plants are young, so i didn't have lots of paph flowers this year, and i spent most of my time on french forums, but i often come to read topics there ;)
yes, i add clay balls at the pines barks, coco chips and a few perlite, but i repot it this spring so id wait a bit more to say if it is appropriated... and i don't really know if ill let it in its bonsai pot...