Abstract: A device for the delivery of nutrient solution to plants, comprised of an air-lift pump and a vessel which surrounds a portion of the air-lift pump. The vessel is of adequate size and shape to contain a supply of nutrient solution for operation of the air-lift pump. The vessel is replenished with nutrient solution from another, larger source of nutrient solution (external reservoir) with tubing, pipe, or other means of fluid communication. This device allows an air-lift pump to be supplied with nutrient solution, while attenuating plant roots, growing media, and other matter, thereby increasing air-lift pump reliability. Also, this device makes possible the operation of air-lift pumps at a variety of locations relative to a nutrient solution reservoir.