After 72 days of its realization, this is the last time we see the column. Compared to the previous entry, the changes are less visible. As in recent times, we could say that simply has occurred an increase in the number of microorganisms, so there is an increase in breathing products. That is, as we can see in the photos, iron oxid (orange), iron sulfide (black) and green microorganisms that are divided in the area of the bottle that received light directly (only in the light column). Something to emphasize is that, the iron oxid, that first was in the illuminated column, now is also in the top of the dark column.
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