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

Product characteristics: 1， clean， sanitary， without mouth water， 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 for normal water change， at the same time separable bottom sand and gravel and design. Instructions for use: 1， the water with water exchanger tube immersed in a fishbowl 4-5 inches， shake up and downseveral times until the fish in the water is automatically discharged. The product is about 1.6 meters