Oliver Knott sets up silent aquarium at German clinic

7ae1865a-b6c1-4175-84a0-aa1e7296e3f4

Editor's Picks
Features Post
The brightest pupils
04 October 2021
Features Post
Dealing with egg ‘fungus’
04 October 2021
Features Post
Rathbun’s tetra in the wild
13 September 2021
Fishkeeping News Post
Report: 2021 BKKS National Koi Show results
13 September 2021
Features Post
The World's forgotten fishes
16 August 2021


An aquarium, aquascaped by the expert Oliver Knott, has been installed at the Heidelberg Ethianum Clinic in Germany.

The tank, which holds 2000 l/440 gal is located in the reception area and has been set up at the clinic for its calming and tranquil effect. Just behind the aquarium is the lounge where the patients gather to drink coffee or tea.

Peace and quiet is particularly important in a place such as this, and it's interesting that the aquarium is silent in operation, as Knott has chosen equipment that runs exceptionally quietly.

The filter is an Eheim Professionel 3, and it runs at a volume of less than 40 decibels, which Eheim tells us is a new benchmark. In fact it's so quiet that apparently people don't even know that it's there.

The extremely quiet running is made possible due to a re-engineering of the pumphead by the manufacturers’ technicians.

According to the manufacturer, the filter is suitable for tanks from 600 to 1200 l/132-264 gal in volume, but under the professional supervision of Oliver Knott the filter has performed up to the 2000 l mark: the water in this large tank being circulated by just the one filter. The flow rate is adjustable and can be monitored with the help of the flow rate indicator.