Can I grow Neanthe Bella Palm, Rabbit's Foot Fern, and African Violets in one small terrarium? My concern is the palm's differing water requirements. I've read that palms don't need/like the same constant moisture that ferns and african violets need. I didn't realize this until I had bought the three plants for my very first terrarium. I thought they would work because of their mutual love for humidity! Any help is appreciated, thanks.