I got the suggestion from the book Giant Clams In The Sea And The Aquarium by James Fatherree. Nitrate has to be supplemented when they are aquacultured because in mass they do a thorough job of stripping it from the water.
Aptasia could also be used in a refugium because its so good at consuming waste from the water column. I think some people who raise the Aptasia eating nudibranchs culture it like that. So theres another less conventional one that we could all afford. Any takers?
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