HeroNeo&reg; Aquarium Ornament Wreck Boat Sunk Ship Air Split Shipwreck Fish Tank Cave Decor The air hose with decorations on the adjustment of the valve or pump connections. Put into the aquarium decorations and fixed position. Ajust the air pressure to make decorations to get your ideal motion effects. Use air pump connection (Not included). Size:24cm x12cm/9.36'' x 4.68''(approx) Quantity: 1 pc(Not included air pump connection ) Material:Plactic