NICREW Multi-Colored LED Aquarium Bubbling Stone Disk, Round Fish Tank Bubbler with Auto Color Changing LEDs

Diameter: 2 inches
Promoting the circulation of water, creating continuous water towe
Color automatically changes and is most effective when viewed in a dark room
It fits most aquariums, fish tanks, pools, and other similar occasions
Package: Round stone disk with build-in multi-color LED lights, 3/16 in a tube, and power adapter. The pump is not included