Thank you Ray for the temp observation and thank you all for your comments.
While it is true, humidity was a concern of mine from the start, the mid spring weather in sunny CA was a bit drier than I would have wanted for my phal.
Then again it was the second time around I tried to grow orchids and my very first with s/h.
I did follow the advice back then and moved it to a bigger s/h pot, it just didn't take.
Fortunately it is growing new roots and that makes me happy!
I would love to give s/h another try in the near future