Motor with speed controller:

Lets you vary the speed of the fishing screw depending on the size of the fish, by means of a frequency inverter.

Translucent polyester screw:

The fish swims about inside the translucent polyester screw, in the water, with no stress and with the same light level as in the tank where they were caught.

See video

Simple and reliable:

The elevator starts instantaneously, without priming.

It uses less power (about 0.75 kW) than other systems (fish pumps, for example)

See video of the fishing drum