which one would be better as a substrait? cyprus mulch or coconut husk
Both are great at keeping up humidity. Its what you like. But be sure when using Cyprus mulch you bake it in oven to kill any bugs that can get in. Once baked your good to go. I have used both and work well.
I use the reptile moss and it works great it bumped my humidity up by about 20-30% when I used terrarium liner. What kind of substrate do you use now. If you want you can use the reptile mulch for substrate and just mist it daily and it holds humidity well and is clean.