WATER FLOW CONTROL -- An adjustable knob allows control of the water flow rate, enabling desired water pressure. Maximum flow rate: 550 GPH (2000 L/H). The impeller shaft is made of stainless steel for durability. STRONG POWER & HIGH LIFT -- Voltage: 110-120V. Max lift height: 7.2 ft. Model number: SML-630. Features a 30W high-efficiency motor for energy savings. Lift height refers to the maximum vertical height water reaches when connected to the nozzle (ensure joint is securely sealed). 3 NOZZLES -- Includes three nozzle sizes: 0.51", 0.62", and 0.75" for customizable water flow. Threaded fittings provide stability. Detachable and easy to clean. SUCTION CUP & 5.9 FT POWER CORD -- Power cord length allows for flexible installation. Equipped with 4 strong suction cups to secure the pump in place, suitable for vertical or horizontal placement in the aquarium. WIDELY APPLIED -- Ideal for water circulation and aeration, enhancing the aquatic environment for fish and turtles. Suitable for use in aquariums, fountains, spouts, and hydroponic systems. Meets UL 1081 standard. FEATURES -- Designed for reliable, ultra-quiet operation with energy efficiency and low power consumption. Stainless steel impeller shaft ensures strong performance and extended service life. Adjustable knob for precise water flow control. Easy to disassemble for cleaning. 4 powerful suction cups provide secure mounting. WIDELY USED -- Can be used in aquariums, fountains, spouts, hydroponic systems, outdoor fountains, and garden water features. NOTE -- Clean regularly to prevent debris blockage, which may cause noise. Do not operate without water. Submerge the pump in water before connecting to power. Turn off power before performing maintenance or water changes. For cold water use only.