Glad to hear your clown is in better shape. I've had a pair of true perculas
that found their home in a rather large patch of glove polyps (anthelia)
where they rarely ventured from during the past year or so. When they first
"discovered" the glove, the mass had only about six or seven polyps, now the
mass has dozens of polyps speading to the glass and sand. The clowns didn't
effect their growth (to my knowledge). Before that they made their home in a
growth of colt coral (cladiella), which did not appreciate them being there.
They are fascinating to watch as they try to feed and clean the mass of
glove polyps, but I do miss them swimming about.

Patrick