Returning with further changes in our
Winogradsky column, the following observations have been made:
On day 25 (15/4/16 - Pic. 1) the top layer
of the liquid phase had a thicker crust of calcium carbonate. Also, a light
purple color has been noticed in some parts of the liquid phase (Pic. 2) which
indicates the appearance of anaerobic purple photosynthetic bacteria (e.g. Chromatiom).
Pic.1 Pic.2
After
three days, on day 28 (18/4/16), the whole liquid phase gained a purple color,
as well as the upper layer of the solid phase (Pic. 3). The purple bacteria’s
quantity in the solid phase has been increased after 5 days, on day 33 (3/5/16)
and the liquid phase had a lighter purple color (Pic. 4).
Pic.3 Pic.4
On day 39 (9/5/16) the color of the column
became crimson, as well as half of the solid phase did (Pic. 5).
Pic.5
Today,
on day 44 (14/5/16), the color of the solid phase is much darker than the rest
of the column (Pic. 6).
Pic.6
We
will inform you as soon as we see any new changes.
.
Very nice!
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