sailfin with HHLE

[asylumdown]

What types of nori are you feeding it?

I don't know if it was just a myth, but someone told me once that brown algae (Phaeophyceae genera) contains a bunch of chemicals that help ward off HLLE, and that sheets of green nori might not be nutritious or diverse enough on their own. I have bought every colour and species of algae sheets that I can find (species from the Rhodophyta, Chlorophyta, and Phaeophyta families) and feed them on a rotating basis. Just make sure that it's actually different algae species, and not cheap food coloured ones.