On Sat, 20 May 2006 16:14:44 GMT, Wayne Sallee
wrote:

Yep it's aiptasia.

Ah, my past experience of viewing about 1000 of the little B******s in
one tank has paid off with respect to species identification. To see
them out of control was a formative experience.

Wonder what the "incubation period" for these blasted things is, ie
how long after you *don't* see one can you assume the tank is now
genuinely clear.

Steve