Circulation pump for freshwater and saltwater aquariums Ideal for Malawi coral reef aquariums 360° rotating bracket and nozzles enhance the wave effect. Simulate the natural ecological environment and scatter them water flow. Clean up fish food and feces on the bottom of the aquarium faster, reduce water pollution, enhance the exchange of microorganisms in the water, and maintain the cleanliness of the aquarium. 360 degree free rotation, multi-ceramic wear parts support, super quiet. Triangular rubber base construction, stable motor vibration and noise isolation from the case collision. The suction cup can prevent the scratches of the aquarium. Just move the suction cup outside the aquarium to adjust the position of the pump. The maximum glass thickness of the aquarium is 15mm. The effects of the surf pump are adjustable. IMPORTANT: △ 1.To avoid breaking the aquarium, please do not let the anode and cathode together when installing the magnet.