Sorry for resurrecting this old thread
But as many of you know,Potassium is highly effective @ killing algae in ponds and has been used to also kill Montypora nudis, that is what i would guess is the main ingredient responsible for it.
Some people have also reported dipping rocks containing Bryopsis with potassium is highly effective.
Just a tought.
Kent tech m
Ingredients: Deionized water containing the following elements (as ions): magnesium, chlorine, sulfur, calcium, potassium, bromine, strontium, boron, fluorine, lithium, rubidium, iodine, iron, molybdenum, zinc, nickel, copper, manganese, vanadium, cesium, cobalt, tungsten, selenium, and chromium.