It may be too little or too much flow. I have a euphyllia corner of my tank, 6-7 different colony/frags, I can tell you that 1 frogspawn smack in the middle is more sensitive then all the rest and closes up more often then the rest. Why? I have no clue whatsoever.
You don't need to move it up I wouldn't think, but it may want more or less flow. I would try to spot feed it too while you are at it.
You don't need to move it up I wouldn't think, but it may want more or less flow. I would try to spot feed it too while you are at it.