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The Reef Flow 2.0 4000 is a compact, high flow device for the home aquarium. Measuring only 2.2 inches thick (including the external magnet) by 1.9 inches in diameter, the 4000's svelte size doesn't seem like it could be capable of the over 1056 gph of...

The Reef Flow 2.0 8000 is a serious flow machine for hobbyists that require broad swaths of turbulent current. The 8000 will push over 2113 gph of precisely controllable flow that can be adjusted via the 30-degree adjustable head, the three (included)...