I ALWAYS QT. Moorish idol was also QT'd. Ate flake, pellets and mysis shrimp in QT. Had really good water flow. I seem to have very good result with Omega One Marine flakes in a high water flow environment. Many of the more difficult classified tangs (Achilles, powder blue, etc.) have done really well on that as a first food source. Moorish idol was no different. He was treated with Cupramine and Prazipro after he started eating.
I think strong flow also benefits them greatly as in the reefs they swim where the currents are strong and they do this for long distances. I got two MP 60s on one side making waves and the swim against it all day.
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