Turn off the pumps before trimming? Or grab each piece in forceps before cutting it off.the problem is that im unable to catch all cuts, some are still moving in the water colum. i use a net to catch them but not everything
Xenia spreads fast enough that it's best to fence it in, either by surrounding it in aggressive corals or by putting it on the sandbed, so it can't grow unimpeded. Otherwise it'll spread and you'll be constantly trying to trim it back.

