Tetra Whisper AP 300 Air Pump These Air Pumps are Tetra's most powerful line of air pumps. The pumps are designed for situations that produce more back-pressure, such as deep tanks (up to 8 feet deep), long decorator air stones, multiple air stones in one or more tanks, and protein skimmers for salt water. All models include a lifetime limited warranty. This warranty does not cover water damage and rubber parts. Which model is right for you: Find the depth of your aquarium on the chart below. After finding your aquarium depth, look across for the number of air devices you plan to use in your aquarium, this will determine the model number that is ideal for your needs. Depth AP150 AP300 12" 7 12 18" 7 12 24" 6 10 36" 6 10 48" 5 8 96" 2 3

• Tetra's Most Powerful Line of Air Pumps
• Designed for deep tanks with significant back pressure
• Pumps air down to 8 ft.