I picked up a case of Zoa Eating Nudibranch from someone I'd been buying and trading from for years.*
I've treated a tank with 70 gallons of water volume (factoring in overflow, rock, and sand displacement). With an >entire< (roughly 4.3 x the recommended dose for flatworms) bottle of unexpired/sealed FWE twice in two weeks. There are absolutely still live ZEN. Including 2 I specifically put in a frag cup to make sure I could observe for death/effective treatment.
It's my fault I got them and it's now my extremely **** burden to bear. But just an FYSA if you were hoping to treat that way.
*Just just because you've been doing it for a long time doesn't mean you shouldnt use precautions.
I've treated a tank with 70 gallons of water volume (factoring in overflow, rock, and sand displacement). With an >entire< (roughly 4.3 x the recommended dose for flatworms) bottle of unexpired/sealed FWE twice in two weeks. There are absolutely still live ZEN. Including 2 I specifically put in a frag cup to make sure I could observe for death/effective treatment.
It's my fault I got them and it's now my extremely **** burden to bear. But just an FYSA if you were hoping to treat that way.
*Just just because you've been doing it for a long time doesn't mean you shouldnt use precautions.