Mine are finally starting to at least notice that the anemone exists, I've seen one of them in the anemone a couple times. I added the anemone 2 weeks ago. The first time I think they interacted with it was to try and pick pieces of mysis off the tentacles when I tried to feed it. The clowns are probably 3-4 years old and I don't think they've ever had an anemone, so it might take them a while to figure it out.