AAPA25L Active Aqua Air Pump, 8 Outlets, 12W, 25 L/Min, 25L, White

Good efficient pump. Runs very quiet yet powerful. I have been using over one year. Very durable. Very efficient for 8 bucket DWC. Lots of air flow. I like th3 large cylinder air bubblers with this pump in my buckets.

Maybe I am jumping the gun but I really like this pump. I have over 10 tanks and wanted a single unit to run them instead of buying more extension cords and relying on single nano pumps for each tank. This unit is heavy and large. Do not think you can get away with placing it anyway because it's footprint is the size of a large dinner plate and the weight has to be at least 10 pounds. The strength dial on top turns easy to either side to control the flow and it responds quickly. The outlets are far enough to accommodate a variety of sizes of nozzles or tube connections. It easily fit the "standard" airline tubing size but also the tiny adapter that comes with those tiny nano air tubing that comes with some nano pumps. The rubber feet help to elevate the pump for air circulation around the unit to keep it cool. Keep your pumps cool and out of direct sun. The downside is that it is loud if you really turn the flow up. I have it connected to six 20 gallon tanks and two 10 gallons and thankfully did not need to worry about the noise - runs perfect without noise. If you need to turn the flow up, there are workarounds to help muffle the noise but that is the tradeoff. Had I known I would suffer from MTS (Multi Tank Syndrome) I would have gladly started with this multi outlet unit. Less spent on extra extension cords, usb power blocks and nano pumps. Save yourself some frustration and money.

This is my second purchase, not because one failed, but because I needed another. The first one is over 5 years old and still working just like the day I bought it. Plenty of air for my 190gallon. The downside is it would be loud if it wasn't in an enclosed cabinet.

This air pump is doing what I bought it for- replacing a shelf full of smaller pumps and the resultant tangle of electrical cords. It puts out a very respectable amount of air, and the adjustment dial works accurately. It's not exactly silent, but not exceptionally loud. It makes more noise when dialed down, most air pumps do, and this one is a bit worse in that regard. I wouldn't want it in a living space where I spent a great deal of time, it's a bit too noticeable for that, but one room away it's fine. Longevity is an unknown, but for now it's a decent pump at a decent price.

I have all version of this air pump, the ones with two air outlets, four and eight. Make sure you do not drop these pumps, if you do it could crack the individual air valves within which will leak air and you won't get air out for that outlet. For my simple backyard hydroponic setup, I use the 8 outlets version to provide air for eight 12-gallon totes to grow vegetables and tomatoes and it does the job very well. I love the fact it have a potentiometer (knob) so you can control the pump power. At night I turn the knob down to minimum and it only put out 2-watt and yet still give some airflow, very energy efficient. Provided you get a flawless one it will be quiet. The power knob is crucial to keep the noise down at night. I am very sensitive to sounds, this air pump is about 12ft away outside my partially opened window and at the lowest power output it is quiet enough that I could sleep undisturbed at night. If you're doing hydroponic totes system, I recommend using at least 2x2in or 2x4in Active Aqua cylinder air stones with these to give good airflow, don't use small cheap air stones. People usually laugh at low wattage air pumps, but it's the air stones that make a difference. I am not a fan of expending large amount of electricity to grow food. If you use the 3-watt two outlets version with a quality air stone, such as a 2x4in cylinder one, it will give out very good bubble pressure, enough to brew compost tea in a 32-gallon trash can in short time.

This is one of the quieter air pumps, and the installed 8 port is much better than the more industrial looking air pumps with the hose and 8 or 12 way splitters. The best thing is that after 2 years of non-stop 24/7 use, it is still running strong today. I have had some of the industrial looking versions from Vivosun and similar manufacturers, and they don't last nearly as long. In fact after a year, it gets very noisy. The Vivosun airpump, the over 800 GPH version, recently died. The industrial Vivosun version constantly runs hot, right out of the box. This pump, with it's outer housing and internal cooling, is definitely much cooler to the touch and the adjustable airflow knob is a nice feature, although I don't use it personally in my circumstances. If you are running a 6 pot hydroponic setup, with two air stones in your main pump tank, and one in each 5 gallon bucket, this pump will absolutely do the trick.

Quiet. Second pump I’ve purchased. I’m sure it won’t be the last! Last air pump (15l) model lasted nearly three years. I got my moneys worth. Upgraded this time. PERFECT DWC pump. Not over kill and sure as crap not weak. Using with the root spa system .

I must be very unlucky. The first one I received, 6 out of 8 ports did not work but it was very quiet. I would say it was about the same as the Tetra Whisper for 60gal. Got it replaced and the second one was super loud. Loud to the point where I can be 20ft away and still hear it. It wasn't a humming loud but more of a buzzing loud. All the ports worked but wow the sound was unbearable.

Its perfect ! I have it with many air tubes going into 3 aquariums. The output is great !!

One 8 outlet pump is good for 4x 5 gallon pails for DWC. Quiet for its output. Dense. Variable output.

not nearly as loud as commercial but moves enough water for my 4 plants DWC.

Review after running pump for six months: I bought this pump to replace a bunch of little pumps I had for my hydroponic garden and with eight air hose connections it easily did as much. It's currently the only one I use and does a great job now that I figured out its secrets...more on that below. I'm not sure why I expected it to be smaller but that's my fault for not paying attention to the dimensions I suppose. That said, if you're used to little pumps with one or two air hose connections expect a beast of pump to show up if you buy one of these. The only real issue I had was with the noise level. I actually chose this pump, not only because of other reviews stating how quiet it was, but because I was already using a smaller version of the same brand of pump and it barely made a sound. I was just in need of an upgrade. Now maybe it depends on what you are used to, maybe it's hit-or-miss when it comes to noise level and these pumps given that reviews are varied, but what mine was emitting at the lowest setting and what I considered reasonable did not coincide. Nevertheless, unwilling to accept being continuously annoyed with the sound, an absurd reenactment of "Affe einen Schädel betrachtend" revealed that the noise level changed depending on which way I held the pump. This observation set in motion a bunch of bizarre pump arrangements involving paracord, some old brake springs at one point, and a significant amount swearing. After suffering repeated failures at reducing the noise level I ultimately opened up the pump casing and, innards exposed, saw that this pump is actually made up of four little pumps arranged in a horizontal fashion within the casing: two on top of two others. It appeared that the top two pumps were the cause of my decibel vexation, so a previously unconsidered arrangement came to mind; hang the pump like a great grey fat bat from the top of the hydroponic tent, nozzles pointing downward, so all the internal pumps were at an equal height. Lo and behold, the sound was immediately lowered to a reasonable level and has been ever since! My spinach and basil now bask quietly in delightful air bubbles while I don't hear a thing.

Wow that air machine in pretty impressive, at low its really quiet ! at high itsn't so loud ... perfect machine brand new ! thank you hydrofarm !