72 in stock (can be backordered)
Water Valve that sucks in air as it enters your tank
Venturi valves allow filters to suck in air as well as water so that when the water is returned to the aquarium it returns a flow of bubbles. This can be helpful in keeping the water well oxygenated.
According to Wiki, the Venturi effect is the reduction in fluid pressure that results when a fluid flows through a constricted section (or choke) of a pipe. The Venturi effect is named after its discoverer, Giovanni Battista Venturi.
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