is it possible to give star polyps a freshwater dip? A friend of mine is willing to give me some GSP but he has flatworms, as these aren't really a hitchhiker that I want can the polyps handle the dip?
not sure about a dip, but you can QT them for a short period and hit em with flatworm exit. next time you do a water change. fill up a bucket or something the polyps can fit in. throw a power head in it, and drop them in a dose it.