VIVOSUN 400GPH Submersible Pump(1500L/H, 15W), Ultra Quiet Water Pump with 5.2ft High Lift, Fountain Pump with 5ft Power Cord, 3 Nozzles for Fish Tank, Pond, Aquarium, Statuary, Hydroponics

Why did you pick this product vs others?: Works well for Fluval 9 gallon. Upgraded the freshwater to saltwater and have the right flow. Fits with no other modifications needed. Hopefully chugs along for a few years.

Works perfect in my Fluvall 13.5

I’ve had this about 7 months it shoots water up a hose about 6ft up to a filter. It’s started to slow down and the front cover doesn’t snap off as it should to clean it. Still very good for the price, I guess that’s expected

The type of fish I’ll be keeping in this tank require a higher filtration and flow rate. This is a wonderful upgrade to the stock pump it came with. Fits perfectly and provides at least 2x the flow rate if I were to guess.

Just replaced an older pump I had in my hydroponic garden and this thing is soooo much quieter. Like night and day difference. My wife is going to be so happy cause now it just sounds like a fountain instead of a loud motor and a fountain..

Barely move water. Got the strongest one and still doesn’t work right. The hose is extremely thin and short.

Was easy to install and adjust. It has been here for about 6 weeks and working well. Had a few leaves get caught in it and was easy to clean. So far, so good. Updated. This pump keeps needing to be reset. It goes from putting up the amount of water we want to a tiny dribble about once per week. The switch must be defective. Sad, because I liked it.

Perfect, I’ve been using this in my tank for a year now and couldn’t be happier

Excelente producto

Using for DWC hydroponics growing cucumbers. It's my first setup, so still learning. I like that it hase a tube for additional air. However using it makes much more noise. Using this one and the COVVY Ultra Quiet 200 GPH submersible Water Pump for one 100L tank. Also using API POND ECOFIX SLUDGE DESTROYER for beneficial bacteria. Still some issues with algae developping, however this may be due to the fact that the pumps were working only during the day before (moved it to a different area now). The cucumbers are still producing nicely, so overall happy.

The item I received was clearly used — the box was torn, the instruction manual was crumpled, and everything looked like it had been used before. The flow adjustment knob doesn’t work at all — it's just for show. No matter how you turn it, there’s no difference in water flow. The pump is also very loud, not even close to “quiet” as advertised. This feels like a cheap, misleading product being resold as new. I also noticed it’s labeled as a “Frequently Returned Item” on Amazon — now I understand why. Total waste of money. Stay away.

Works. Kept working. It was for a small garden fountain. I bought stretchy hose to make it fit at both ends.

Bought for my fluval evo 13.5g. The old pump was starting to under perform so I bought this to replace it. It is physically smaller but moves more water for less watts. It has a slight hum that I only notice when my ears are a foot away from the pump.