RBTA isolation

[reefy]

Hi fellow,
I am wondering if I am the only one who try to isolate rbta on the sand(attached to a rock off course) he is only 2" feed him 1 mysis everyday. And he has been on the sand bed for 3 weeks seems happy. Please let me know if you think I am doing something wrong. I have a pair of clowns but they are hosting frogspawn instead. The only problem is that my bsjf is spitting sand once in a while.