VAKI Density Control

Aqua Nor 2021 Innovation Award Finalist

About Density Control

Automates the regulation of fish
density to enhance grading/
counting accuracy.

The Density Control mechanism attaches at the end of a 6” hose and sits on the bottom of the fish tank. During pumping the amount of fish passing through the hose is measured. This is not an accurate count, but rather an indication of the amount of fish per volume of water


Attractive Features

The input side of the mechanism is separated in two areas by a lever. On one side of the lever, fish enters the hose in a conventional manner. On the other side is covered by a stainless-steel mesh, that hinders fish from entering the hose. By adjusting the position of the lever, one can adjust the ratio of water entering from each side. Once the sensor measures density over a certain amount, a linear actuator adjusts the position of the lever to reduce the flow of water bearing fish and increases the flow of pure water. 

During periods of low density, the mechanism opens completely, so that fish is pumped without any loss of efficiency.

VAKI Density Control

Watch a quick Demo

+ Learn more about

Vaki SmartFlow

The SmartFlow System enables the users to gather and store information about all measured fish for easy comparisons of size and number. This facilitates the optimization of every operation as VAKI devices can be controlled and fine-tuned using SmartFlow in order to achieve high levels of efficiency and accuracy.


+354 595 3010

Akralind 4, 201 Kópavogur


Akralind 4
201 Kópavogur
Tel (+354) 595 3000


VAKI is one of MSD Animal Health Intelligence (MSD AHI) fish and aquaculture company.
MSD AHI is the world’s leading animal intelligence group, providing world-class devices for animal identification and traceability. Our pioneering monitoring solutions deliver smart data products and services for the management and wellbeing of all animals.