| Kmarch, I keep all of my orchids in S/H. This includes: Phals, Paphs, Phrag, Neofenitia, Oncidium Alliance, Dendrobium, and Cattleya.
As far as technique. I try to transfer my plants into S/H when there is active root growth. This helps the transition into S/H. The Paphs don't seem to care when they are switched. I have repotted them while in spike, in flower, or with new growths. All seem to be just fine. My Phrag. Jason Fischer loves the moisture and has roots diving into the water at the bottom of the pot.
One thing I have learned about S/H is pot depth and airflow.
If you pot a plant too in a pot that is too tall, then the water will not wick up to the roots very well and they will dry out and die. At the same time if the pot is too shallow then they will never get enough oxygen and will rot off. The bottom of the roots should be about 1 inch above the drainage holes. If they grow into the water they will be fine because they have adapted to that environment.
Airflow is a big factor as well. If they do not get a good airflow then they can easily rot at the base of the plant where it enters the LECA. I did lose a couple of Onc. and a Dendrobium because of this.
Hope this helps a little. Let me know if there are any other questions. |