Fortunately there aren't any fry in that tank. Okay, that's a lie; there's a few dozen White Cloud fry. But that was an accident.
Anyway, what on earth can I do to eradicate the cyclopseses? The main feature of the fry tank is a big wad of Java Moss lookalike (Glossadelphus) so no introduction of fish will take care of the cyclops problem, as there's simply too many places to hide. I'm looking for a treatment that will spare the Glossadelphus, which may be too delicate to handle a copper treatment.
Grr! Stupid copepods! - Erika