This very interesting macroalgae left of the nem just showed up in my display a few months back from a frag I added and it caused me to start noticing macroalgae, which is something I never paid attention to outside of the chaeto or caulerpa in my sump. So I bought 7 different types recently including 4 red gracilaria types , a halimeda, and codium. Anyone had a hippo tang that did not eat some of these? Would love to put some in my display. For now I'm keeping the algae in a separate tank and will add some of the cuttings after it has grown a bit to see what the hippo will or won't eat.