I know some people covet pulsing xennia but I do not. It has run rampent in my tank and competes with my LPS for space. It has even started to grow on top of my Caps!. I pull/peel it off the rock as best as I can when it gets large enough but it always comes back and usually spreads to a new location from the floaters. I try to skim them up w/ a seive but some always escape. Anyone know a way to eradicate them more effectively?