i've got this ProtoMarin Coral from Aquarium Munster...
according to the package, its reef safe and it is for treatment against skin parasites such as oodinium ocellatum, cryptobia, brooklynella, trichodina and cryptocarion..
if it helps and if you want to try, let me know,
i can pass you mine..
not very sure if it helps,
i bought it when i just started the hobby,
thinking that it might cure ich..
it didnt work...