Mr Frist,
Each polyp needs to eat. Mysis is great for them, but fish will have way too easy of a time picking it away from them. Cyclopeeze is a good choice and they still get a little bit after fish pick. Rather than a turkey baster, which is very messy, use a syringe like you get in a test kit to target feed each polyp. Some say they are good being fed weekly, but IME, they do best and actually grow when fed every 2 days. Try to feed it sometimes during the day, they can become accustomed to the lights and open more often during the day. They look like yellows to me. Very nice piece. They are a lot of work though.
chris