All water pumps are measured in discharge capacity (GPM), vertical suction lift, and maximum head lift. GPM Discharge Capacity is the rate of speed that water flows from the source to the discharge point, measured in gallons per minute. ... Vertical Suction Lift is the vertical distance from the water source to the pump.
Water pumpis great for everything from fountains to hydroponic systems.
By using an air pump, you can take advantage of the diffusion of air into water. When placed at the bottom of your reservoir and in conjunction with a high-quality air stone, the bubbles produced will increase the dissolved oxygen level of your nutrient reservoir.