Check Valve

	10 Check Valves Stops water from back siphoning into your air pump. Prevents airflow from reversing during a power or pump failure!!! This could drain aquarium, killing your fish and damaging pump or carpet!! Allows you to have the air pump lower than the aquarium NZ$ 12.50 each		20 Check Valves Stops water from back siphoning into your air pump. Prevents airflow from reversing during a power or pump failure!!! This could drain aquarium, killing your fish and damaging pump or carpet!! Allows you to have the air pump lower than the aquarium NZ$ 20.50 each
	2 Check Valves Stops water from back siphoning into your air pump. Prevents airflow from reversing during a power or pump failure!!! This could drain aquarium, killing your fish and damaging pump or carpet!! Allows you to have the air pump lower than the aquarium NZ$ 3.50 each