Add-A-Stone

Can be used singly or added to, as desired. Remove the pug on the end of the stone and add 1, 2, 3, or more Add-A-Stones in series. (Make sure your pump is powerful enough!) Produces a fine wall of bubbles for fresh or saltwater aquariums.

Anchor base sets up instantly and stays down where set. Either bury the flange or the entire unit below the gravel line. Use with standard airline tubing (sold separately). Each stone is approximately 2" wide.