Pvc Encased Air Stone 16″ SKU: AS816 Category: Aquarium Accessories Related products Ammorid Insert Aquaclear 500 / 110 Aquafx 2ft Cabinet & Hood White 24×12 Assembled (Pickup or local delivery only) Foam Base 12×18 (use for 18″ wide Tanks) (PKT 10) 5way Breeding Trap