I use clay pots (for my phals) because the bark is almost never too wet, that way I know I'm not over watering it. I use plastic on my Cats and paphs, cause they like it a little more damp. It works for me.
Recently when I repoted a few of my phals, I used a rooting hormone. And I can't believe the amount of new roots I got! I have one phal that is growing 10 new roots!
The potting mix is very important as well, I use a bark mixture. I bought it at walmart, it is very chunky and has charchoal, bark, rocks, perlite, coconut husks... my phals love it.
Good luck
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