Provides important trace elements as required daily

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