Phragmipedium potting problem

[JKeys]

Quiltergal -- I would, but I have them growing right next to an east facing window. Because they are all in transparent plastic pots, I don't want the roots to cook in the sun. Most of my clay pots have absorbed lots of salt from my tap, and after I switched to this setup, there was a noticeable change in growth in all of the phrags. Next time I am out, I can get some more clay pots to try that out though.