Inline airation venturi solvent weld 1.5" 43mm ID fits 1.5" 43mm ID demountable fittings. The venturi simply connects to the pond outlet. By using the flow of water being produced from the pond circulation pump, it creates a vacuum that will suck air in from the atmosphere and mix with the water inside the venturi, making bubbles that increase the amount of oxygen dissolved in the pond water.
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