JVP-130 aquarium circulation pump is ideal for freshwater, saltwater and coral reef aquariums. 360 rotatable bracket and nozzles for more powerful wave effect. Simulate the environment natural eco-friendly and disperse streams Suitable for 0.8- 1.0m, 120-200L fish tank (based on 0.5m width and 0.5m height) 360 degree free rotation, ceramic multi-piece bracket, very quiet. Triangular rubber base, stable motor vibration and isolates the collision noise from the case. Clean fish food and droppings at the bottom of the aquarium faster, reduce water pollution. Strengthen the exchange of microorganisms in water and keep the aquarium clean. The suction cup can avoid scratching the aquarium. Just move the suction cup except the fish tank to adjust the position of the pump. The suction power of the suction cup depends on the thickness of the aquarium glass. The maximum thickness should not exceed 15 mm. Important: In order not to break the aquariums, please do not let the anode and cathode together when you install the magnet. Please install it correctly according to the user manual.