- 4-in-1 internal filter designed for aquariums from 20 to 1500 liters, suitable for aquariums, ponds, and hydroponic systems - Powerful 30W submersible pump with a maximum flow rate of 1800L/H and a maximum lift height of 2.1 meters - Includes 2 biochemical sponges that effectively filter waste and improve water quality - Extremely quiet copper wire motor for noise-free operation - Three types of water outlets: filtration, oxygenation, and circulation, with interchangeable nozzles and adjustable oxygen hose - Four strong suction cups for stable attachment to horizontal or vertical glass surfaces - IP68 protection against water and electrical leaks, compatible with most 16 mm hoses - Easy to disassemble, clean, and maintain, ideal for keeping a healthy and crystal-clear aquatic environment