Thanks Cindy. I do not know if what I'm doing is effective in keeping ritteris or just plain luck (since I can never keep bubble tips anemones and they are the easy ones!) As for feeding, I only feed them about once every two weeks or so and they will take the food. I tried to feed them more often in the past but noticed that they do not ingest the food as readily. Again, I have heard that you need to feed them constantly.
David:
What works for me is a constant blast right at them. In the past, I have used a SeaSwirl as a return and have the anemone about 10-12" away from the nozzle. I also used a Tunze stream and that is about 12-20" away. That is how I "train" them to stay where they are. My experience is when you first get one, put him/her on a perch right under some intense light without any current. Once the anemone has some hold on the rock, turn on the current so that the anemone feels like it is clinging for its dear life. Eventually, it will inflate and be happy and then you can slowly move the current away or oscillate it bakc and forth (SeaSwirl). This has worked for me and the both of them have never strayed away from their positions.
-Luan