The Innovative Marine Spin Stream Return Nozzle can instantly create turbulent currents that mimic natural ocean tides inside your aquarium system. This affordable return nozzle creates more lifelike flow so corals can sway back-and-forth naturally as Mother Nature intended. The Spin Stream creates random 40 degree circular wave patterns to enhance oxygen levels, coral expansion and nutrient import/export... all without using any additional electricity (they're powered by the water coming from your return pump). Spin Streams are compatible with most all-in-one tanks, powerheads and canister filters and are designed for flow rates between 52-600 gallons per hour. They also include ½, 5/8 and ¾ inch \"cut to fit\" rubber adapters.

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