Trying Orchiata Super grade for Phalaenopsis

Testing Orchiata Supergrade bark mix on my two phalaenopsis orchids. the goal is to create medium chunky enough to be able to dry out in about a week in my tank. Mix: largest pieces of orchiata supergrade manually picked, coarse sponge rock and charcoal. Test sublects: Phal LD’s Bear Queen, Phal gigantea and Aeranthes ramosa.