Christmas tree, coco and feather duster worms
love me some worms! Above link is to my 1 year Christmas tree worm rock, it’s the big type of worms along with a dozen or so pagurid crabs (which I’m convinced can do a hostile takeover of worm holes away from the Christmas trees). Pic below is of my 2 year old smaller rock which just always looks amazing and I’ve never lost a worm on it. I feed lots of coral foods (brightwell blizzard, brightwell LPS, roids, live and dead phytoplankton (specifically reef nutrition Shellfish diet and live tetraselmis) as well as LRS foods to the fish. Of the two, the big worms are super hard to keep happy IMO, requiring constant but not too hard flow and hard to see if foods are effective at keeping them happy.