The only things I wouldn't dip in CoralRX are fish, inverts, and anemones. Ricordia and Rhodactus are similar to anemones but they're not harmed by CoralRX. I dipped a yuma I got recently before adding it to my tank and the flatworms came boiling off it. It's doing great now.
I was given a small bottle of "Reef dip Coral Disinfectant" from the Seachem guy at Next Wave. I have not tried it yet, but the bottle says "It is safe to use with both Stony and soft corals. It is also safe for anemones and polyps. "