u/ReactionLopsided7761

What's this in my terrarium? Is it mold?

I put a vine root from a store there. What am I supposed to do with it? Won't it destroy the plants?

(I have bromeliads there. Hemi-closed terrarium, cca 10 l, made a week ago)

My first bromeliad - Guzmania (my unexpected love 🥰) - has young ones.

Today I planted them.

I created this little terrarium ("bromeliadarium" 😎)

What do you think? some advices?