Treatment
1 Aquarium - this acts as the boundary of the Baltic Sea. Aquarium used was
found in the Environmental Laboratory at the Myyrmäki campus.
2 Air pump - in the Baltic Sea, the tides and constant movement of currents is
very important. Horizontally, it ensures that heat and salt is distributed throughout
the sea and vertically, it is crucial for the exchange of heat and gases (such
as CO2) between the higher and lower levels of the sea. The same movement is
important in the aquarium therefore it is essential to use an air pump. The air
pump was bought from Akvaariokeskus.
3 Pebbles - although the Baltic Sea has rocks at the bottom, the reason for including
pebbles in our aquarium was to keep the plants fixed to the bottom of
the aquarium.
4 Water - the water used in the aquarium was water from the Baltic Sea. The water
was collected from the shore, where the water is not as salty as in deeper
parts of the sea. This is an important point when looking at the results of the
project.
5 Vegetation - the plants are a key component to the system therefore plants that
would have the best chance of survival and treatment abilities were chosen.
Appendix 2
7 (27)
The selected species have been previously used in brackish water aquariums
or ponds to lower nutrient levels. Aegagrophila linnaei, also known as ‘Marimo’,
was chosen experimentally for this particular project. A detailed analysis of
each species is written in the Economic Evaluation section.
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