Our cold water aquaria system at Eawag, Kastanienbaum, contains 122 aquaria with a total volume of 33’000 L. More than half of the aquaria are connected to a flow-through system which provides the aquaria with a constant supply of fresh water from Lake Lucerne. The remaining aquaria are filtered with an air filter connected to a centralized compressed air system.
Our cold water aquaria vary from small 150 L rearing aquaria, up to a large 2250 L tanks. We also have many small aquaria which can be set up as required.
Additionally, we sometimes run experiments in the ponds and a basic aquarium system in the boathouses of the Ethological Station Hasli. The ponds are about 14.5x12m and up to 1.5m deep.
At Eawag, there are two large outdoor observation tanks with a glass wall along one side to allow observations of fish behavior.
The two large outdoor observation tanks are 10 x 3 x 1.05 m and 15 x 3 x 1.4 m, with a combined volume of 94’000 L. The tanks can be partitioned lengthwise and crosswise to create smaller compartments. These tanks are connected to a flow-through system with a continuous supply of fresh water from Lake Lucerne.
In addition to the huge troughs, there are 40 blue 1000l mesocosms and many smaller black mesocosms in which we have run many experiments testing for eco-evolutionary feedbacks.
