①. Ideal for complete aquarium cleaning or quick maintenance. But it is not suitable for cleaning fine sand. ②. Easily removes residue from the substrate without disturbing the lower layer of gravel. ③. Please pay attention to the usage way in the video and detail page. Improper use can cause blockage. ④. The automatic pump removes water and fills the aquarium with water. Adjust the height to suit your needs. ⑤. This eco-friendly product supports aquatic life with a 'green' approach. ⑥. This unit can be used in freshwater aquariums and salt water with a water depth of up to approx. 70 cm. ⑦. Product Aquarium vacuum cleaner. ⑧. Ideal for cleaning fast and efficient, it can reduce and simplify maintenance time. ⑨. It effectively removes trash and other harmful particles without disturbing the lower gravel layer. ⑩. Take care of your aquarium and aquatic life in a perfect way, make your filter work better and keep your fish and plants in good condition. ⑪. Used as a vacuum cleaner and a system to change the water. ⑫. Removes waste and other harmful particles. ⑬. Does not disturb the gravel layer. ⑭. Designed for medium and large aquariums: over 40 cm in height. ⑮. The extension nozzle can be used for deeper aquariums. ⑯. Tilt it to better clean gravel, change water and remove waste. You will be able to clean the aquarium without any mess! ⑰. Always keep the pump completely submerged, otherwise it will stop working. ⑱. Remove the filter element. Remove the end cover pieces from both ends of the filter element. Thoroughly rinse out any accumulated impurities under running water. ⑲. Attention: The vacuum cleaner is suitable for freshwater and saltwater aquariums with a depth of water up to approx. 71 cm. The grain size of the aquarium gravel should not be less than 2 mm. Not suitable for cleaning a sandy bottom. ⑳. Depending on the depth of the aquarium, you can add the extension tube or the extension nozzle. ㉑. The pump must be positioned below the minimum waterline before starting it. ㉒. If the impeller of the pump is blocked by debris, please loosen the impeller nut counterclockwise and remove the cover, then clean the debris from the inside. ㉓. It is recommended to change up to a maximum of 25% of the total water in your aquarium every 2 to 4 weeks.