Rena Air 300 Air Pump

The most quiet air pump I have ever owned. I was a faithful customer of Hagen and Tetra air pumps but got fed up with the noise... then I tried Rena. My Rena Air pump has been running for 3 years without any problem. The pump is powerful enough to generate a curtain of air bubbles using long difusers. The air flow is adjustable.

I have a 55 gallon tank with an arowana who are super sensitive to changes especially when the oxygen in the water changes. this tank is in the living room. The Pump is so quiet you forget its running at times. its a great buy Ive had mine for a few years now, only till now to buy another one for my other tank. It makes me and my Aro super Happy!

Buy Rena Air 300 Air Pump Now

When they were good, they were very, very good and when they were bad, they were horrible.

I'm apparently slowly working my way through Amazon's stock of Rena Air Pumps.

First I ordered a 400. It was LOUD (bumped a quiet room from 40 to 46db at 1m (kind of making me seriously question Rena's 30db at 1m claims). Once plugged in, it turns out it generated no power on one side. The 400 is supposed to be two 300s in the same enclosure. I'd bought one 300 and one noise maker that didn't push any air. Fortunately, Amazon are awesome about returns.

Given the 400 was only 50% successful, I replaced it with two 300s. That way, if one was faulty, I could keep using the other one while I sent the faulty one back. It's $10 more than a 400 but keeps the tank aerated in case of issues. I'm very glad I did. Sure enough, one works well while one makes a lot of noise and can't drive air through the airlines, let alone produce the air a borrowed 200 is producing.

The lessons I'm learning here are:

1) Rena's quality is *very* variable. You can get very good ones. And you can get very bad ones. I'm running at about a 50% success rate (counting the 400 as two pumps as it is exactly that two x 300s inside one enclosure).

2) If it's running very loud or barely putting out air, even after you adjust the flow control, you likely got a bad one.

3) Decibels are an incredibly subjective measure. What does 30db at 1m recorded in a silent room really mean in your home? With a TV on, with background noise, it shouldn't be too noticeable. In a quiet room while you're home alone, expect to easily hear it through an aquarium stand and for it to be approaching the noise of a running fridge. If it's louder than the fridge and the airflow is poor, you've likely got a bad one.

4) Order in pairs so you've got something to compare to and can return one if it's noticeably louder or produces noticeably less air. Having one on its own, with nothing to compare to, just leads you to questioning your judgment.

5) Get used to the idea you'll possibly have to return a couple until you get a good one. Fortunately, Amazon's great about this.

6) If returns annoy you, don't get the 400. If there's a 50:50 chance of getting a faulty 300, you now have a 75:25 chance of at least one side of the 400 being faulty. Plus, if one 300 fails later, you've still got one pump. If one of the two 300 pumps inside the 400 fails, you've now got a loud unit to either deal with or entirely replace.

Read Best Reviews of Rena Air 300 Air Pump Here

This pump lives up to the hype! It is a little pricey but maybe you do get what you pay for. I'll know more a year from now. Up to this point it is a good working , QUIET pump.

Want Rena Air 300 Air Pump Discount?

Purchased this air pump to replace my much older whisper pump and this one was VERY quiet. Had it now for several months and would recommend it to anyone wanting peace and quiet in their home.

Save 55% Off