Plastic Multi Air Stone 2.5″ (2 Pack) SKU: AS01P Category: Aquarium Accessories Related products Foam Base 12×18 (use for 18″ wide Tanks) (PKT 10) Foam Insert Aquaclear 300 / 70 Carbon Insert Aquaclear 300 / 70 Aquafx 3ft Cabinet & Hood Black 36×15 Assembled (Pickup or local delivery only)