水苔 is OK for most case except for those who tend to overwater ~
It's difficult to see whether your moss cannot hold enough water for the plant. How long will it take for the moss to completely dry out after a thorough watering ??
Dear avery :
That's why we have to chat here and verify all information we've got.
However, reading books could provide certain primary knowledge for new beginners and allow them to move on in the right direction....