I tried everything. Joes Juice, kalk paste, hot water, lemon juice, various fish, peppermints, vinegar etc.
I finally bit the bullet and tore my entire 100G system down, removed the corals to a quarantine tank and started to work. I removed all the rock and tried killing the mojanos individually but there were too many (Note to self, next time you see even a single mojano, do not pass go do not collect $100, KILL THE SUCKER IMMEDIATELY!). I ended up cooking the rock which was not working well either in the 3 weeks I had alloted so I took each rock, sprayed it with a spray bottle filled with straight distilled white vinegar, brushed it vigorously with a plastic scrub brush and put it back in the rubbermaid totes in the dark.
I repeated this process several times over two weeks until all were gone. In the meantime I used a hypodermic filled with vinegar to spot kill the ones on my corals in the QT tank. I also siphoned all the loose ones and the ones attached to the back glass out o the display.
Finally this past Sunday I put the tank back together and am in the middle of a cycle. Once things settle back down I will add the corals and fish. Its really sucked but I was too lazy to pull that one single piece of rock off the back bottom and kill the couple that came from who knows where. the system had been up almost 4 years when they appeared and I am very careful who I trade corals with so I have no idea how I got them.