This item is not suitable for children. Remove from packaging and rinse thoroughly with warm water before placing in aquarium. For proper use, ensure air tubing is connected snug. Inspect product and replace if it becomes kinked or damaged. If color transfer occurs, remove product from aquarium.Simply cut airline at convenient location between air pump and first outlet. Ensure that indicative end is furthest from the air pump outlet. Attach airline to both ends of the check valve. If air does not flow when pump is turned on, ensure check valve is properly inserted. Reverse if necessary.
Petco Check Valve
Dimensions: 1.75" Length