Rehab gift phal in sad shape. Prev phagnum moss medium. Think did good job prepping/repotting but had to use mainly bark-pumice-perlite mix. My apt 60 degrees, north light condensation pretty constant. Is this a good medium or should I get something less retentive? Mix suggestions?
That mix should be fine, but you are correct that the temperature of your apartment may be a concern. If you could obtain a heat mat to go under the pot, the phal would surely grow more quickly.