Hydrofarm Active Aqua Submersible Water Pump, 4-Outlet, 1,500 GPH

Karl snellen: Silent power full

Canada on Nov 09, 2023

Blake g: Keeps the reservoirs mixed up and aerated !

United States on Oct 25, 2023

Eric M. Olivencia: I bought this in 2014 to use in a small pond and it went out after the house I built for it leaked. This pump was on 24/7 outdoors for almost 9 years. I bought another pump from another brand and it went in less than a year so I am buying this one again. Highly recommend

United States on Oct 08, 2023

Leonard: I'm using this pump in my Deep Water Culture (DWC) setup with (4) 5-gallon buckets. Even cranked up all the way it is reasonably quiet. Quiet enough so that I can't hear it in the adjacent room. I may add some valves to regulate pressure later on, but I'm not sure that's even necessary in my application.

United States on Oct 03, 2023

SHARON CACY: This pump is great for DWC grows works great!

United States on Aug 08, 2023

Spinster_Sister: 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...

United States on Jul 12, 2023

Roott: I like that it's fairly silent.
Not as powerful as I thought it would be.

Canada on Jul 06, 2023

Valknut: 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...

Canada on Nov 08, 2022

LK: This pump is huge. It's about 3-4 times the size of a small two-outlet pump. Having said that, it's large because it's very powerful and moves a lot of air. It seems to be good quality and quite sturdy (it's very heavy).

The pump is definitely overkill for what I'm using it for (a 5 gal and a 10 gal aquarium with two lines per tank). I have two lines running to sponge filters and two lines running to air stones. I have to keep the pump setting on "low" or it pushes too much air for my small tanks. All my air lines have air-control valves which allows me to minimize, maximize, or stop air flow from a line. To reduce noise, you should always close off unused air lines.

Note: this pump does not come with accessories, so you need to buy valves and air tubing separately.

The pump overall is very noisy, giving off a deep hum. I have it on a shelf in my livingroom and I can hear the noise at the other end of my hallway. Because the noise is bothersome, I'm in the process of building a wooden box for the pump and will add some thin foam inside to help insulate it. I've cut slots for the power cord and tubing and an air vent on top.

If my box reduces the noise...

Canada on Oct 08, 2021

DIDDID: Okay so I have had this since November 12, 2015, it ran OKAY all winter but with a much smaller stone than I had for a fairly large pond in my back yard... fish stayed alive and I was happy! At the beginning of the summer a really large pond specialist came to my house and sold me a fantastic stone that worked fabulously all summer. In the fall, I closed up the pond and it seems the air wasn't coming out as hard, but I thought it was because it was too deep or something (pond is 7' and it's deepest). Today, Christmas day 2016, it stopped working, YIKES I thought, 11 beautiful Koi, no I have to save them... so I went out and thankfully it was warmer today even with a foot and a half of snow on the ground, I was able to pull up the airstone and the weighted tubing, unplug the pump from under the fake stone cover and bring it in. filled the laundry tub and took the hose off the pump to see if it was working and it was! So I took a steal wire brush and cleaned the stone and wow, it is back to normal... fantastic PUMP, it did not burn out from pumping to a blocked stone and it is now running well.

Previous Review after a week of owning it:
This Air Pump has worked really well...

Canada on Apr 15, 2016