JVP-230, circulation pump for freshwater and saltwater aquariums Ideal for Malawi coral reef aquariums 360 rotating stand and nozzles enhance the wave effect. Simulate the natural ecological environment and disperse water flows. Clean up fish food and feces at the bottom of the aquarium faster, reduce water pollution, strengthen 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 of the case collision. The suction cup can prevent the aquarium from being scratched. 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 fish tank, please don't let the anode and cathode together when installing the magnet. Please install it correctly according to the user manual.