My phal is potted in sphagnum moss. It was purchased from a local Lowe's store. That was what it was potted in when it was bought. I thought about repotting it recently and bought more sphagnum moss especially for orchids (also purchased at Lowe's) but I have been reading that it should be potted in bark. What should I do? Is this moss not what I need? It is specifically called Better Gro Orchid Moss.