"The plant is huge and needs lots of water. Seems dehydrated"
Is it in bark or a bark mix? I use straight sphagnum for many of my paphs since I'm growing in my home. That said, many people shy away from an all-sphagnum medium. You can always add a substantial amount of chopped sphagnum to a bark-based mix and it will be an improvement. I don't know anything about your culture, and I don't want to be the fool that rushes in. Just a thought.