Ideal for complete aquarium cleaning or quick maintenance. Not suitable for cleaning fine sand. Easily removes residue from the substrate without disturbing the lower layer of gravel. Please refer to the usage instructions in the video and detail page. Improper use may cause blockage. The automatic pump removes water and refills the aquarium. Adjust the height to suit your needs. This eco-friendly product supports aquatic life with a sustainable approach. Compatible with freshwater and saltwater aquariums with a water depth up to approximately 70 cm. Aquarium vacuum cleaner designed for fast and efficient cleaning, helping reduce and simplify maintenance time. Effectively removes debris and harmful particles without disturbing the gravel layer. Helps maintain a healthy environment for fish and plants and improves filter performance. Functions as both a vacuum and a water change system. Removes waste and other contaminants. Does not disturb the gravel substrate. Designed for medium and large aquariums over 40 cm in height. Includes an extension nozzle for deeper aquariums. Tilt to clean gravel, change water, and remove waste efficiently. Clean your aquarium mess-free. Always keep the pump fully submerged during operation to ensure proper function. To clean the filter element, remove the end caps from both ends and rinse accumulated impurities thoroughly under running water. Note: - Suitable for freshwater and saltwater aquariums with water depth up to approximately 71 cm. - Gravel grain size should be 2 mm or larger. Not recommended for sandy substrates. - Use the extension tube or nozzle as needed based on aquarium depth. - Position the pump below the minimum water level before starting. - If the impeller becomes blocked, loosen the impeller nut counterclockwise, remove the cover, and clear any debris from inside. Recommended to change up to 25% of the total aquarium water every 2 to 4 weeks.