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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.
This product ships to your doorstep. Most orders placed before 2pm ET on business days will ship out the same day.
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