Tetra Whisper Aquarium Air Pump 300L - Reconmended for tanks up to 300L
Minimal noise, maximum air flow. The Whisper® Air Pump’s dome shape actually flattens sound wave frequencies. In addition, each model features sound-dampening chambers designed specifically for that model. And the air pump’s rubber feet and suspended motor prevent sound waves from reflecting off surfaces such as tables and shelves.
Available in models for aquariums from 10 to 300 Liters, Whisper Air Pumps provide a powerful flow of air. 

Tetra Whisper Air Pumps Help Keep Your Tank Quiet
Tetra Whisper Air Pumps keep your aquarium oxygen levels high, helping keep your fish healthy. And with seven different sized pumps, there is sure to be one that is perfect for your aquarium. This line of air pumps has a unique dome shape and rubber feet. This flattens sound wave frequencies and helps prevent them from reflecting off of surfaces such as tables and shelves, allowing your pump to produce minimal noise. Whisper Air Pumps can be used in deep tanks (up to 8 feet deep), and have enough strength to power long decorator air stones, multiple air stones in one or more tanks, and protein skimmers for salt water aquariums. Every Tetra pump comes with a warranty, see product label for details.
Whisper Pumps Produce a More Oxygenated Aquarium
Tetra’s Whisper pumps will keep both you and your underwater friends happy. The pumps provide oxygen, which is good for your fish and tank, and also provide water movement. Combining these two benefits will lead to better water conditions overall. The underwater bubbles produced by the machine also add a mesmerizing touch enhancing the look of your aquarium. These pumps are the most powerful line that Tetra offers, ensuring that you are getting the best quality pump available.