I thought I would provide a little of my experience with the Majanos. I will try to make a long drawn out process very short.
I set my tank (240G Display) up in DEC 2006 using Macro Rocks. Basically these are bleached out with no living creatures on the rocks. I took an old piece of rock, from my 90G, were I had Yuma's on it as well as some unidentified, later to be named "Majanos" on it.
I had a LFS owner drop by my house one day to look at my tank. He noticed the Majanos on this one piece of rock and prudently advised me to remove the rock immediately. I did not take this advice and the Majanos proceeded to spread throughout all rock, sand, plumbing, etc in the tank. It even took up homage in snail shells, overflows, etc. I mean this stuff is like a bad case of the Herpes.
Well I battled trying to rid the rock of these pests for almost 1.5 years using every, and I mean every, known product under the aquatic umbrella, only to have the Majanos retreat for a short period of time (usually 2 weeks) and return with a vengeance. I even tried numerous fishes, including the False Facula, Raccoon, and Copperband butterflies.
It was a losing battled!!!! I was on the brink of leaving the hobby. Again, this was my experience and trust me. I will never go through this again! With over 300lbs of rock in a tank that sits roughly 4 feet off the floor, injecting, basting, and removing rock from the tank is not an easy task. Humbled by this problem I made a last ditch effort and plead for help in the thread below and although the drastic it is not the end of the story:
http://reefcentral.com/forums/showthread.php?s=&threadid=1424515
First, I want to thank a fellow kind reefer named ¡§Servo¡¨ out of Texas who called me on the phone and showed empathy for my situation and inspired me to take action. Within minutes of ending the call I proceed to remove all the rock from my tank.
The thread above was only the beginning as continuous monitoring of the tank post rock removal showed these ¡§Rock Herpes¡¨ re-appear on the glass, sand, coral bases, frag stand, plumbing¡K.basically everywhere!
So where do we stand on the problem today? My entire 240G display is completely empty void of water, sand, fish, coral, etc. I then went to Wal-Mart and purchased 15 bottles of 1 gallon jugs of vinegar and flushed the system with a mixture of vinegar and water. I let the tank run for 2 days killing anything that could be seen or not seen in the tank. Today the tank is completely emptied.
All my coral and fish are in the garage in a 150G Rubbermaid container which is setup with all my previous equipment except for a new skimmer which was lent to me by a fellow local reefer¡K..SPSFREAK Æ'º
So obviously this post was not as short as I hoped but it gives you an idea to what measures I am taking to rid my tank of the ¡§Majanos From Hell¡¨
This is still an ongoing process as I continue to monitor to see if the ¡§immaculate conception of the Majanos re-appear.
Good luck to all those who currently face this treachery, I thank those who have shared their wisdom of near destruction, and pray to those blessed with an absence of this ¡§rock herpe¡¨ and may it stay that way.
I use a steak knife and a pair of tweezers to assist as well.The steak knife works pretty good, insert and twist... DIE YOU -------- so & so's >>>>> :blown: 
