Safe to mix in tank?

[marie]

I have had problems with a cabbage leather (Lobophytum sp.) and a turbinaria in the same tank. The turbinaria refused to open the entire time the cabbage was in the tank, even when it was 3 1/2 feet away, as soon as I removed the cabbage the turbinaria opened up again. So it is possible to have problems but I think if you run carbon in the system and do regular water changes it can lesson the danger