I put a a big plate of hydnophora, the flat not branching, in between to protect my seriatorpora from the brown star polyps that kept growing up into it an killing it.
The hydophora keeps dropping globs on the star polyps but the star polyps keep growing back. They're wearing it down and I hate to say it, but I think they're winning because the edges of the hydnophora are dying off.
So for now ... hyndophora vs. brown star polyps = bsp