I cut off the tops of the bottles I was using, filled with pellets, placed in the orchid plant (I soaked them in water to try to remove as much of the old potting mix as possible), added more pellets.
I poked several holes in the pots about one inch up. This is the water reservoir and overflow. The big orchid is my newish Sharry Baby. It is what I am most concerned about.
It has two bloom spikes and I can't wait for the blooms!!! I put these in my bathroom, they get perfect light there. And now, hopefully, perfect water. We.will.see.
From Garden Web:
s/h and semi-hydro are shortened terms for semi-hydroponics, a method of growing plants using a non-organic medium. Because it is not an ebb and flow method, it isn't true hydroponics. Common materials used as a growing medium are LECA (clay pellets), Aliflor, Primeagra, and sponge rock.
Probably the most common material is the clay pellets. The plant is planted in a container which has a reservoir, usually a plastic pot with holes approximately 1" up from the bottom of the pot on the side, or Misco or Misco-type self-watering pots. The clay pellets wick the moisture up so that the roots of the plant receive constant moisture without drowning it.