I had my maroon clown long before my rbta, and it took the clown about 2 hours to start hosting and he hasn't left since. I actually have found the bta to be less mobile than some of the other anemones I have had. Find what you think is a good place and start there. Mine loves light and moderate flow. He will relocate if he isn't happy! No problems with the Koralia's, I have 2 number 4's in my 92 and no issues, echoing what someone said above, I haven't seen anyone with problems with them, just some of the other ph's out there. The relationship between the clown and the bta is amazing, you will really enjoy watching them! good luck!