I tried the rock in seperate container method, but I couldn't remove all my rocks due to corals in palce and suck (and the fact that the aquascaping is where I want it). I'm thinking that i'm either going to have the bomb the tank 3+ times in a week to get them out of there, or let them comeback in large enough numbers to use a nudi to control them. They're only a problem in large numbers, so I dunno. But yes, it will be a pain no matter which way I go, because if the nudi eats them all too quickly, I'll have to get rid of him so he doesn't starve, and then tehre will still be some left...ooo.. but thenI could nuke the tank. . . . that may work!!