Rubber Flex. Air Stone 90cm SKU: FRS90 Category: Aquarium Accessories Related products Ammorid Insert Aquaclear 150 / 30 Foam Base 12×18 (use for 18″ wide Tanks) (PKT 10) Aquafx 3ft Cabinet & Hood White 36×15 Assembled (Pickup or local delivery only) 5way Breeding Trap