Multifunctional 2 in 1 cleaner - The closed nozzle helps clean gravel and effectively separate excrement and food residue from the aquarium and keep the water fresh. Compact design with 1 soft water stream (72.4 inches) and 2 hard water pipes (11 inches x 2). The pre-cleaning holes are tightly connected and there is no problem of water overflow. Suitable for aquariums of different sizes. The counter-flow valve construction makes drainage more efficient. Note: If the pump works in one direction, place the letter end down towards the barrel.Easy to use - easy to grip siphon pump.Push the pump several times and the water will flow automatically. High quality PVC pipe will not collapse so as not to block water flow. (Note: The outlet should be lower than the inlet.) EASY TO INSTALL - The aquarium gravel cleaner can be divided into different parts to meet your needs, and it can be connected to the aquarium to free your hands. The drip cleaner is made of non-toxic plastic, it will not hurt your fish, remove dirt and food scraps from the bottom of the aquarium , it can be used to clean and feed fish manure, very practical. It can also be used as a water exchanger for aquarium and aquarium.The test tube has four scales (10 ml or 15ml or 20ml or 30ml) for easy display of standard measurement marks.