Review on 🐠 Uniclife Aquarium Air Pump with Dual Outlet & Accessories for 100 Gallon Tanks: Efficiently Oxygenate Your Tank! by Sharonda Guzman

It is adjustable and comes with vents, check valves and fittings making it the best deal in this price range. It whispers quietly at low frequencies and has a noticeable hum in a quiet room when operated at high frequencies. I filter my 15 gallon tank with this pump set to medium and it's nearly silent. much quieter than my previous head. It also has anti-vibration (soft rubber) and soundproof (pointed) feet. Here's how it gets *more* quiet: BUY MORE POWER If you want to be quieter, I buy a variable speed pump that doubles the power and then downsizes it to half. The harder the pump has to work, the louder it gets. A larger pump set on a low setting will actually be quieter than a similarly designed small pump pumping the same amount of air on a "high" setting. so. If you only need one hose, you can couple the outlets with the included tee to double the airflow while keeping it at medium power—a near-silent installation. Just make sure you use both check valves *between* the "T" and the outlet on each hose, not just one after the connector. This is because each check valve is a choke point (i.e. where the air should go). The presence of two valves reduces resistance, which increases the total amount of air flowing through the hose. The easier it is for your pump to deliver the amount of air it needs, the quieter it will run. CLOSE THIS If you've followed my advice and bought a larger capacity variable speed pump you shouldn't have a problem with that. Overheating when wrapped in soundproof material (such as a washcloth). Get as much fantasy as you want here; Just make sure it doesn't get hot. DO NOT TOUCH No "hard" part of this device should come into contact with other "hard" objects. especially the bubble stones on the glass! When something hard pushes air out and touches something else hard, especially the tank's glass, it behaves exactly like a "woofer" and emits vibrations in the form of sound. Try this experiment: Hang an active air stone in water against glass. now closer to the glass. now in the middle of the pool. Notice how the sound quickly changes from LOUD to inaudible once it's more than an inch from the glass? You can do the same experiment with other parts and objects in the tank to see if they make noise. Air attached to these items must be carefully treated with sound absorbing material such as rubber or silicone suction cups. The more space the better.