Looking closely at your sps corals, they do appear to be mounted to maricultured plugs, this is why I asked if they were maricultured or wild. I NEVER take one home unless I have watched it for at least 4-6 weeks at the LFS. They acclimate very poorly, and if they survive at the store for at least this period of time, it will help to ensure survival in your tank. Could be a pest, but I doubt it, AEFW usually pretty slow death. You can check for RB's, but I doubt that either. Post in the SPS forum if you get the chance. Maricultured and Wild are very hard to keep, and would not recommend unless you have been succesfully keeping sps for awhile. They are finicky and do not have a great survival rate, monti looks good, but they are usually more hardy, acros not... I have a hard time not purchasing those nice size mini-colonies, and the price, just hard to turn them down, but have gone through alot over the years, and only have 1 currently surviving. Everything else in the tank is aquacultured...
GL