AQUANEAT 12 PCS 4 Aquarium Air Stones Bubble Curtain Bar Air Diffuser Aerator Hydroponics Airstones

Features: Dimension: 4" L x 1" W x 0.75" H; create a decorative curtain of tiny bubbles that helps agitate and aerate your aquarium water. Made of safe, durable, washable and non-toxic material. Fits 3/16”standard airline tubing Increase oxygen levels, "blow off" CO2 and raise pH (Sock them for at least an hour before use) Great for freshwater, saltwater aquariums and hydroponic use Includes: 12 pcs air stone bars Dimensions: 4" L x 1" W x 0.75" H Includes: 12 pieces of air stone bars