digitate hydroid.

[silenceisgolden]

i'm having problems with tons of digitate hydroids, and some of them are underneath ric frags. some of them are impossible to get to since they are deep within crevices of larger rocks. i've scratched a bunch off manually, but nonetheless, it seems to be neverending. has anyone had luck with peppermint shrimp? any alternatives? i've also heard that keyhole limpets would kill em, but i can't seem to find a place that sells em... any help would be much appreciated.

thanks.

[bertoni]

The only approach of which I'm aware would be lime or lye paste, which require careful use. You might get lucky with a shrimp, but I wouldn't bother trying, personally.