Sera Marine Component 4 Trace Elements Kationics
Provides important trace elements as required daily
In combination with sera marin 3 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.
500ml bottle sufficient for 5000 Liters.