Features:

ØDrag vertically to collect plankton in the middle and lower layers of water

ØThe network port can be closed, and the fuse can be used to control it to open or close in a certain water layer.

ØIt is equipped with an electronic flowmeter, and the user can obtain the flow of water through the network port, and the later calculation is more accurate.

ØThe count value of the flowmeter can be displayed via cables to the water surface

ØThe bottom collector tube and mesh bag can be replaced