Thanks for the explinations.
To answer all the questions I've read above...
to Kmarch:
1) 3 i got for almost 3 years now, 1 i got since november (replacement of one that died or i got killed as u wish

) I water them this way since a good year
2) The one that i got since november is doing fine, not growing atm, his flower stems just dried up so time to cut them down.
My yellow phal was able to keep his two flower stems and both stems got a keiki with roots
My two others with basal keiki are not doing as i would like, wrinkeld small leathery leaves, though new leaves are in seight
3) nope they don't bloom at all. Last year one of the two (that now got a basal keiki) bloomed very shortly with 4 flowers
4) when I repotted i did had some rotten roots on the two that now got a basal keiki
to Missan:
I did do a lot of reading, but on the net i found a lot of contrairy stuff, this forum looked very helpfull to me, reason i posted my -maybe- silly question in the newbie section
My window is facing North West, leaves don't feel warm
Greetz
Sarah