Orlushy DC-4000 Silent Swirl Controllable DC aquarium Pump 25W 1050GPH-marine wavemaker return pump with sine wave Controller for salt/Freshwater coral reef fish tank sump Circulation

Fantastic pump! Plenty of power and extremely quiet. Time will tell but so far great value. Love the variable speeds and digital display. Have it running submerged in my sump pushes plenty of water straight up 5’ through 1” PVC. 300 gallons per hour on setting 7.Odd thread size though. There’s no fitting out there at your local hardware store that will fit it. Not a problem if you use hose or tubing but I wanted to hard plumb it into my existing system. Had to get creative. Used the large hose barb fitting it came with and glued that into the pipe. Works great.

The negatives (only a few but not bad):1). There should be a 90 degree angle input option that can be screwed on so that it can work in lower water levels.2). The remote should have an on/off, not just a 10 minute "feed" shutoff option. I ended up buying https://www.amazon.com/gp/product/B01FT4RBBM/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1 to turn the pump on and off.3) One set of plugs is not screw in, and they tend to fall out or get pulled out and of course the pump won't work.4) I make fountains and I know there are many people who will use these for other than fishtanks. So perhaps the word "FEED" can be replaced by the word "PAUSE" so that people can use it on fountains, in water walls and other places besides fishtanks.As I said, these are mainly all minor... This is a really great pump.The positives:It's great! It's so quiet. Even on the level 20. I like that it goes up 20 levels. Many pumps go up to 3, 5, 10.It pumps the amount that they said it does.I also like that it's white and black, which matches the fountains I produce.The connection design and the pieces that go with them are good, strong and solid.I have tried mostly every pump on Amazon. This is clearly top for me and I plan to buy more.I plan to buy many more.

Great pump! Use it for my hydroponic RDWC a day couldn't be happier. Completely silent, great flow, and very versatile. Came with plenty of adapters so fit whatever hose you might use. I'm using it fully submerged. I didn't know if it had turned on until I felt the pump hose and felt slight vibration from water flow. It has options for aquarium applications and various pump settings to adjust flow and tempo. All in all a great unit at a good price.

This pump is very quiet, you won’t even know it’s on. It is much more power efficient then my last pump and has the ability to adjust flow by the click of a button. I use this in my aquarium sump.

I actually use this pump to pump water from my water station into my aquarium with the inline function. I do this because I am able to get almost all the water out by aiming the inline tube towards the bottom of the brute garbage can. The controller works great for turning it on and off when I'm done too. When I first tried using this pump with the inline function I thought it was broken because it wasn't pumping water through the tube. I soon figured out that you need to prime the pump and fully submerge the inline tube in water to get good suction. Also, it will make a loud buzzing sound in the beginning of pumping but once all the bubbles are out it is dead silent. Probably the quietest pump I've ever had.

We'll see how it does with longevity, but I'm very happy with the power and quiet operation replacing my tunze 1073.05 DC pump. I haven't messed with wave action or the controls, I just need a pump that works 24/7 on a reef tank.

It is running and I love how silent it runs and that you can regulate the flow. Way better than an AC pump. However, it intermediately makes a high pitched noise after only two weeks. We will see if it lasts. My guess is no.

This has to be the best pump for the money of any pump out there. Simple to set-up and use, works perfectly.