It should be better at holding humidity. I'm planning on switching Calliope to a T8 soon too lol. From what I've read it's a lot better at holding humidity, so much that people have told me to get ready to switch over from cocofiber to aspen since cocofiber holds humidity too well for a PVC. I don't know for certain but research has told me it'll be way better for humidity.
Sent from my iPhone using Tapatalk