1.It adopts micro-nano bubble system, high purification efficiency, the dissolved air has high efficiency and stable treatment effect, shortened operating time and low operating cost 2. It can effectively remove more than 90% of the residual bait, feces, colloids and other organic matter in the water, reduce the load of biochemical treatment, and ensure the safety of aquaculture water quality. 3. Fully automatic control. 4. The collection cup is equipped with a cleaning device, which is automatically cleaned and easy maintenance. 5. Integrated overall design, compact structure, small occucaption and simple installation.