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Showing results for tags 'back flow preventer'.
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Brand new special return nozzle fittings for drilled tanks. One is 1/2", $20, and second is 3/4", for $42. I ordered the wrong size then wrong quantity. Very small quantity of water returns to sump once pump is turned off. These are adjustable to your water level. Custom design by CustomAquariums.com of Wisconsin. If these cannot be used by a club member, I will return them to manufacturer.