JVP-131 circulation pump for salt water and salt water aquariums Ideal for Malawi coral reef aquariums. 360° swivelling bracket and nozzles enhance the effect of the waves. Simulate the environment ecologically and distribute the water flow. Clean food and fish feces from the bottom of the aquarium faster, reduce water pollution, improve the exchange of microorganisms in the water and keep the aquarium clean. Br> 360-degree rotation, support for multi-ceramic wear parts, very quiet. Triangular rubber base construction, stable motor vibration and noise insulation against housing collisions. Br> The suction cup can prevent the aquarium from scratching. Simply 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. < Br> IMPORTANT: To avoid breaking the aquarium, do not leave the anode and cathode together when installing the magnet. Please install it correctly