VIVOSUN 1600GPH Sub Water Pump for Pond Waterfall, Statuary, Hydroponics

Good pump lots of power runs my waterfall and external pond filter well.

UPDATE 6/27/21: Since I most recently purchased the same brand pump at a 4500gph, but it won't let me review another gph pump, it will only let me update my review on the 1600gph pump: the 4500gph pump at 2 foot lift is pumping nowhere near 4500gph. Maybe 2000-2500gph. While that is an estimate, I compare it to the temporary 3800gph utility pump i put on the waterfall while waiting for this one to be delivered and the 4500gph is pumping out way less than the 3800gph pump did, so....I don't think this pump is anywhere near the 4500gph it claims to be. I would need to double that size if it's only really pumping half the gallons it says it does. Love the sturdiness of the pump and they have good longevity, but up the size if you want what you are looking for as far as output goes. This pump (1600gph) is so amazing I bought two! I use them in my koi ponds to pump water from the bottom of the pond up into a filtration system and out. This pump is tough and barely loses any gph when pumping at 5' head. Highly recommend it. Ran without issues 24/7 since I bought it in the spring, though I did remove it for winter shutdown, of course. It's pretty much maintenance free and easy to clean if needed (I never needed to) and it's outflow nozzle is adjustable; which I like. You can take the cover off, but it takes some finesse to do so as you have to line up the pump just right to detach the plastic cover. No need to cut it like others have said, you just have to take your time and figure it out. My only suggestion is that they make the step attachment for the outflow bigger so it can accommodate large tubing if needed. Other than that, A+

Great product. As described

I'm using this as an inline pump to pump water from a hydroponics system in a crawl space up and out into a sink. The pump works great and gets the majority of the water out of my system, but there is one design flaw that really bugs me. The flaw is that the provided nozzles WILL leak if you're using it for this kind of application because there are no O-rings provided to provide a decent seal. I love everything else about this pump, because the nozzles are very versatile and easily fit my 3/4" tubing over the barbs (that part doesn't leak). It's the leaks at the base of the nozzles that are the issue.

Defective, the section with the motor keeps separating from the other half exposing the fan blades.

Works great no issues!!

so I've bought a few, one was defective. actually i think two were but i fixed the second one with a ziptie. i have one on my 150 stock tank and one on my 300 stock tank.

Update: Awful! One month after installation the pump failed completely. Motor seized, locked in place. My similar Little Giant pump has been running for ten years straight now, 8 months a year, in Southern Wisconsin. I had to replace my 880 gallon fountain pump, so I purchased the Vivosun 1600 gph PG1600-S. I installed the pump and plugged it in, assuming the flow might be overwhelming. To my surprise, the flow was less than my previous 880 gph pump. That's fine for me, because it looks good. Out of curiosity, I decided to measure the flow. I have a 3 foot pipe (head), which I routed directly into a 5 gallon bucket without a restriction at the top of the pipe. It took exactly 61 seconds to fill the bucket. Simple math says that is roughly 300 gallons per hour. The manual suggests it should be 1189 gallons per hour for a 3.3' vertical rise using 3/4" tube/pipe. Yes, I used an adapter to reduce down to a 5/8" inside diameter pipe, and that would reduce total flow, but it should also increase pressure at the end of the pipe. Instead, the water only gurgles about 1" above the 5/8" pipe. In conclusion, although it works fine for my application (see video), I strongly stand behind the other reviewers who are saying the product does not meet its specification. Also, someone needs to send a spell checker to the Vivosun Technical Writing team, or teach them how to spell fountain. That's just embarrassing. Now let's see how long it runs. All things considered, I am very concerned. My 2 star rating reflects it. I'll update the review over time.

I bought this pump and it worked great but it has a ceramic shaft. would be better if it had a stronger shaft. anyways the shaft cracked but customer service was awesome, return was easy so i bought another one of their products to replace the one that broke.

Una excelente marca,y he visto el crecimiento de mis tilapias

Water pressure is excellent! No complaints at all. We've used a bunch of different water pumps over the years, and this one was definitely worth the price. It's strong enough to take the water out of our pond and distribute it through a filter, to a waterfall, without issue. It comes with a bag to submerge it under water that you just quickly hose off when it gets dirty.

I bought this in March 2024, over a year ago and it's still running great. Even kept it running throughout the winter. The one issue was, when I attached a filter hose line to the thread intake, the casing broke. Doesn't appear overally strong, so I don't use an external filter but it doesn't appear to need one. I would buy this pump again without hesitation.

It's quiet! The previous pump I had sounded like a muffled boat motor - and I always worried the incessant hum might disturb neighbours during the night when things quieten down. So, I was delighted that I cannot hear this one - and it does the job! It pushes enough water over two 1-foot spillways. I have it on a splitter - and there is enough pressure to support both waterfalls. I definitely recommend it. Ottawa, Canada