No matter is the home of fish tank， fish pond， pool and so can use it to finish a pool of water， the fish tank water change work becomes interesting.

Product characteristics: 1， clean， sanitary， without mouthwater， so you can easily complete the daily work for water.2， complete water exchange work， don't need mouth water.3， durable valve， no need for electricity. 4， designed fornormal water change， at the same time separable bottomsand and gravel and design. Instructions for use: 1， thewater with water exchanger tube immersed in a fishbowl 4-5inches， shake up and down several times until the fish in the water is automatically discharged. The product is about 1.6 meters.