I feel for you. I have problems with Masdies.
Has anyone suggested mounting? Something to consider.
I agree with Philip on changing your source. Find a
reputable grower and call them, have them suggest a plant for your growing conditions. It will likely be more expensive than a supermarket noid but a reputable grower will send you a healthy plant. Check the Vendor Feedback section of the board.
Another source for plants and knowledge are shows and OS meetings, if there are any near.
Try a different genera. My one cattleya noid is thriving on neglect.
![Good Luck](http://www.orchidboard.com/community/images/smilies/goodluck.gif)