Phal failure to thrive

[lauraeli]

I have probably 15 phals and I can grow them in anything from bark to sphag to vase culture. Most of them are doing well. Ive had this one for 4 or 5 years years and it seems to have declined gradually and constantly over that time period and nothing I do seems to help it. The leaves get smaller and smaller and the roots are shriveled looking. It hasn't grown any new roots in a long time. It had a long dried stem/trunk which I finally cut off because all of the roots attached to the bottom of it were dead. About a month ago right after cutting that off I switched it to a modified case culture and moved it to a higher light area. The roots that are on it now are basically old aerial roots. I wet the moss when it dries out and maybe twice a week I mist the roots that are not in the moss. It hasn't done much of anything since. I've brought many phals back from the brink of death, it's easy for me. But seems like there's something more wrong with this one that eludes me. Anyone else have any phals that just never seem happy and eventually just die? Any suggestions?