Strong Magnet: Fixed by magnet and easier to adjust the position by moving the external magnet.
Improve Circulation: Create water movement and agitate the top water increasing the dissolved oxygen for fish, corals and other aquatic plants to thrive.
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Dimension: 4 x 2.5 x 2.5 inches (L x W x H); includes: 1pc 2100 GPH circulation pump. Note: Must be totally submersed under water and do not use with a timer or controller.
Flow Rate: 2100GPH (8000L/H), ideal for 210 gallon freshwater tank or 100 gallon saltwater tank.
Enhance Filtration: 360° rotation flow directions make it easy to keep debris from building up and keep the tank clean.