Surely you jest. Aipstasia as well as majano is not necessarily pests. The same hold true for bristle worms and asterina starfish. I have a tank of majano and 4 different colors of aipstasia that is super looking. I would not trade it for anything. Aip and majano get a bad rap most of the time. Put the things in pityfull water conditions and they thrive and propagate like rabbits, however kept in pristine water they behave relatively fine and in no way are they unmanageable. I have more problems with my pulsing xenia spreading and taking over than I do with majano and aipstasia. I wish I had a camera that worked and I would show you a fine tank full of all the undesireable things folks always throw away.