Are you reffering to the Condy Anemone(Stichodactyla Gigantea).If so I would not let th anemone touch.What will happen is the anemones will go into chemical war far and they will all start to move around the tank from my experince.But if it were a Bubble Tip Anemone(Entacmaea Quadricolor)I would then not for see any problems.
Thanks,
Austin/Clowns101