My experience with schillerianas is that they like it warm in
winter--warmer than most phals. (My experience is based on two previous
winter kills.) I keep mine on the top rack of a plant stand in my
growing room. At the moment, I've got one plant with a bloom spike and
a spike with kiki on it (which looks odd--a 7" spike ending in a kiki
with 3 leaves and a 3-inch root); the other plant has just a spike.