University Of Thessaly

Group Number: 14 

Incubation: Dark

Hello Winobloggers,

After 20 days,

We noticed a foam-bubble crust on the surface.

After 30 days, 

Here we can see this change to the colour of the water due to the FeS which is released from the anaerobic processes which are taking place inside the column.

After 86 days,

Now the water is brown because it is  full of FeS and the sediment is darker .