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At AquaCave, we offer some of the best selection & best prices on overflow boxes and accessories for you marine, reef, and freshwater aquarium. CPR’s Continuous Siphon aquarium overflow boxes provide the most efficient means of getting water to an external filter without expensive modifications to the tank. These precision-engineered aquarium overflow boxes skim water from the surface of your aquarium at flow rates up to six times greater than units with tubes. Advantages such as water level adjustment, quiet operation, fish screen, and a black top to reduce algae growth all make the CPR Continuous Siphon overflow boxes the best on the market.
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