Review on 💧 VIVOSUN 400GPH Submersible Pump: Ultra Quiet Water Pump with High Lift and Versatile Usage by Stacy Sturm

I ordered this knowing full well that it wouldn't be 400gph. I figured 200 gallons per hour since I would be pumping about 36 inches of water which would normally cut the capacity in half! Luckily I decided to do a test before installing it in the sump filter for my new tank. I filled one with 5 gallons. 3 gallon bucket of water on the floor. I placed an empty bucket on the counter above (standard counter height). It took 3 minutes to empty the bucket which is about 60 gallons per hour. I wanted to use this in a 40G aquarium so I would be pumping water 5 times an hour. With this pump it would last over 3 hours. It just won't work! Save time and spend a little more for a quality pump with a solid reputation. you have been warned