Others will totally disagree with me, I'm thinking greenhouse and "in-house" makes a huge dif. Personally, I'm forever pulling that stuff out and replacing it with a nice wood mix....right after i trim all the awful brown rotted roots off that the sphagnum moss turned into mush. Some folks swear by sphagnum, I only chop it into the bark mix, and very sparingly.
Connie
p.s. my phals are in a picture window with good air movement and roughly 83 degree temps year round....how you grow changes your mix...as well as where you are geographically....