NICREW Multi-Colored Aquarium LED Bubbler Stone Disk, Fish Tank Bubbler with Auto Color Changing LEDs
<b>Assembly Instructions/Directions</b><br> Connect the air stone to the airline tubing and the airline tubing to the air pump. Place the air stone to the bottom of aquarium. <br><br> <b>Specifications: </b><br> LED Color: Multi-color<br>Power: 1.5W<br>Diameter: 4 inches<br>Power Cord Length: approx 5 feet<br>Air Tube Length: approx 5 feet<br> <b>Directions</b><br>1. Allow Bubble Disk to soak for one hour before turning on air supply.<br>2. If algae buildup reduces airflow after extended use, remove bubble disk from aquarium and clean surface with a stiff brush.<br>NOTE: The volume and pressure output of your air pump will determine how large an area of the disk will release bubbles.<br>