Has anyone here found a critter that will eat them that can live in a reef? I keep scraping them off of the glass and tossing them, have pulled a few off of a candy cane that they appear to be feasting on, but they keep coming back with a vengeance. My parms are good although I do fight with low dKH on a regular basis, yet I don't see anything there that really needs a change. W/C 20% every other week on a 70G with a wet dry, skimmer and Vortech MP40W. No yucky stuff on my sand, and the rest of the coral and critters are fine.