Ive heard low to med or even med to high seems they can adjust to many currents but I think if the polyps are moving enough to keep them clean that is good
My xenia is up very high in the tank. High current for 1/2 hour then low current for 1/2 hour. The thing is growing great. I am using a power sweep that blows right across it. It's on a timer and is only on every 1/2 hour. I've seen xenia in almost all currents doing well. Mine will pulse during low current though - and that's the charm ...
my xenias are in high current and they seem to like it. they still pump,its harder to see them but if you look closley you see they do.from all ive heard and read they are flexible. i think they'l take what ya give em!!!
