What do you want the refugium for? Nutrient removal, live food or a bit of both? The dwarf angels will generally eat micro algae and probably keep some macros in check. As well, they'll pick at the rock continuously. What they eat while they're picking is probably anything. I'd find some type of mid water planktivore. Firefish kind of thing or maybe clowns. Speaking of dart fish, I saw a curious worm fish at J&Ls this past weekend.
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lusus naturae
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