Kind of like killing a snake infestation with Mongooses. What do you then do with the Mongoose? Galaxia has been the "hottest" coral I ever introduced. It can look at a neighboring coral and sting it. But it IS easier to remove when needed. There is a lot of argument about carbon, I have always used it on and off to polish the water, but I may have been wrong to use it as more and more evidence seems to be piling up that it causes more trouble than it's worth.