Have you tried to get them to eat krill? My Volitan Lion is a deeper red color after I started to feed him krill, also I know that salmon flesh is pink because of the krill it eats, lots of animals in the wild depend on what they eat to gain their color like flamingos...and such. So maybe the krill might darken them up to their normal colors.
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Current Tank Info: 240gal softy Reef, 220gal Reef, 29gal Nano reef, 75gal holding tank, H&S A200 3xF2001 & A250 2x1260, 2x 72" Current Orbit 250W MH actinic T5's. Geo Calcium Rx.
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