Well after failing to source a suitable 'airy' pot for my phal which
needs regular repotting as the plastic pot it's in causes the lower
roots and the stem to rot. So took a suitably flexible plastic pot of
the right dimensions and with an 8mm lip and spur wood drill drilled a
lot of holes in sides and bottom.

So the phal is now potted up in the new pot and fingers crossed.

Peter