Aeration hose's tiny pore size creates extremely small diameter bubbles. The smaller a bubble of air the more efficiently it transfer oxygen into water(more surface area). Small bubbles also take take longer to rise once they are introduce into the water.Slowing rising, small-diameter bubbles mean more contact with the water and a much higher rate of oxygen transfer.By creating significantly smaller bubbles, more efficiency,aeration tube are able to deliver high rates of oxygen transfer and energy efficiency. Parameters of 16mm Nano hose OD: φ16mm±1mm ID: φ10mm±1mm Average hole size: φ0.03～φ0.06mm Hole layout density: 700～1200pcs/m Bubble diameter: 0.5～1mm(soft water) 0.8～2mm(sea water), according to the water viscosity and water level there are certain changes Effective areation volume: 0.002～0.006m3/min.m Air flow: 0.1～0.4m3/h.m Service aera: 1～8m2/m Supporting power: motor power per 1kW≥200m nano hose Pressure loss: when 1Kw=200m≤0.40kpa , underwater loss≤5kp Suitable configuration: motor power 1Kw supporting 150～200m nano hose