Super practical complete set for partial water changes with bottom cleaning in aquariums of 45-70 cm height, with water jet pump for the tap. Easy to install: use the hose to connect the gravel cleaner (substrate cleaner) to the suction pump on the water tap. After siphoning the aquarium floor, move the lever on the tap pump to refill the aquarium. Automatic suction device: the water jet from the tap creates suction (even if the aquarium is lower). Gravel cleaner leans in hard-to-reach places with a corner in its round cross-section. No more lugging water buckets. Easy and safe water flow, hose secured by hose clip and direct connection to water tap. Contains: 1 complete water changing set incl. 8 m hose (12/16), gravel cleaner 27-46 cm long, thread adapter for 3/4 to 22 x 1; 24 x 1; 28 x 1, 2 hose fixing clips, 1 water jet pump.