Nox-ich works GREAT in fresh water. The ingredients are sodium chloride, malachite green 1%, 99% inert. Ive been asking the same question. Will it kill live rock??
I dont know if it works for salt water ich or not. I know for 100% sure it works GREAT on freshwater and I will try it out in my hospital tank the next time I get a fish with saltwater ich. I also know that NO it is not safe for inverts or live rock.