Review on Enhance Your Aquarium's Water Flow with YCTECH Aquarium Fish Tank Circulation Pump Wave Maker Power Head (6W 8W) by Trisha Green

I don't get it, my filter moves at 525 GPH so at 1500 GPH it has to work 3x as much? However, it feels and looks like it's barely going to hit 150 gallons per hour. I even tried different page settings. My pump produces more water flow than this. I think the dates advertised on the site are not very accurate. 4.5 watts per propeller won't give you 1500 gallons per hour. I've been an engineer for 30 years now, the numbers don't lie and the advertisers do.