only time will tell my friend. Some people try to force it, I had my fancy oscellaris clowns for 3 years before they hosted an anemone, which is a gigantea carpet anemone which they naturally host in the wild. The question is what type of anemone did you purchase? How large is it? If it's a bubble tip anemone they may never host it since it's not a natural host in the wild and most clowns are tank raised which makes it even more difficult. I would wait but some people try and force it by introducing the anemone in a breeder box with the clowns or taping posters/pages of clownfish hosting anemones on the glass of the tank. I'm a firm believer that if clowns don't want to host the anemone why force it?