Forgot to add: They're growing in our standard 8-1-1 ratio mix (8 parts sm. fir bark (Rexius) + 1 part #3 size charcoal + 1 part sm. perlite). We tried Orchiata because of it's longevity, but the plants didn't grow as well. Tried LECA as well with same experience as Orchiata.Thanks. This species is not easy for us. I will see if relocating helps.