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Provides important trace elements as required daily In combination with sera marine 4 it optimizes the supply of corals and other invertebrates with trace elements.
Use the cap as a measure.
Add once weekly one capful each of sera marin 3 and 4 for every 26.4 US gal. (100 liters) of aquarium water after having adjusted the Calcium level with sera marin 1 and 2.
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