Make sure the fbt has a place where it can swim. They like staying in the water, and they will come to land if they see food. I have used plant that can live without soil, they use their roots to absorb water, just from the air. Every day I spray the roots of the plants. I have Guzmania and Chlorophytum comosum and also a phalaenopsis. You could take a look in my album to see some pictures of my tank.