this is the answer that eric borneman gave me when i asked about euphyllia compatability
None of the Euphllids require a lot of light and some are found in
quite dim light. They also have a rather unusually good
compatability together, although the more distantly related the more
likely they are to compete. I think you can solve that simoly by
moving species around and seeing which get along the best. They still
may form sweeper tentacles, especially if newly introduced or in
strong water flow, but any competitiion should subside over time
through a habituation response if it occurs at all. Good luck and it
should be a nice tank,. I would also suggest quarantining any new
arrivals due to the high number of Euphyllia that arrive in poor
condition or with diseases. That way, you can avoid the fast
transfer that could occur in a Euphyllia-dominated tank.
Best,
Eric
_______________________________
Eric Borneman
Department of Biology and Biochemistry
University of Houston
Science and Research Bldg. II
4800 Calhoun Rd.
Houston, TX 77204-5001
ph: 713-743-2667