This medium round air stone is excellent for oxygenating aquariums, water reservoirs, and hydroponic systems. Made with durable PVC, this air stone features a larger surface area to maximize the amount of dissolved oxygen in your aquarium, reservoir, or hydroponic system. Use with 3/16" inside diameter, 1/4" outside diameter tubing.
These great quality Air Stones aerate and add oxygen to the water in your reservoir or grow system. Circulates nutrients into the water and helps to maintain an even water temperature. Use with 3/16 in ID air line product #708215.