Paph. moquettianum sp Isn't Growing

[Judi]

I have a Paph. moquettianum sp. that my son gave me back in spring of 2007. It came in a tiny pot. I repotted it in the fall of 2008 in a 2 ½ inch pot in a paph blend and packaging popcorn at the bottom of the pot in case the pot was too big (it was the smallest I had). It grew very slowly when I first got it, but doesn’t seem to have changed over the last 10 months or so. I have it on a shelf behind some short onc. in indirect light. Humidity is about 50% now, and higher in the summer when it is outside. I water once a week in the summer, but more often now that the heat is on—there is no hot air blowing on it. It never dries out completely, but it is not wet either. I mist several times a day in winter. Night temps don’t go below 65. Can anyone tell me what I am doing wrong and why it won’t grow? I also have a paph supersuk that is doing very well.