Contains the important trace element iodine
Iodine does not remain stable for a long time in an aquarium. It is quickly converted into iodide, turning it ineffective for many plants and animals.
A constant iodine level is achieved by daily addition of sera marin 7. Varying concentrations and deficiencies are avoided. sera marin 7 in the dropper bottle allows daily addition without annoying measuring.
Daily add one drop sera marin 7 per each 100 l (26.4 US gal.) of saltwater. It is ideal to add sera marin 7 after the addition of sera marin 6.
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