I have two of this model at $250each. Or buy both for $400. These are commercial grade with a max of 83 gallons per minute. Do the math on that for an hour. This will drain hot tub, pools, and ponds in no time. If you have ever had standing water underneath the house or basement this pump is your best friend. Little Giant 512055 12-CBN Big John 83GPM Manual Submersible Sump Pump in Bronze Housing w/ 10ft cord The Big John submersible sump pumps provide efficient, trouble-free service for extended or continuous use in moving large volumes of water. Little Giant's submersible sump pumps are ideals for use in Excavation, Crawl Space, Basement, Underground Passageway, Loading Docks, Grain Elevator, Construction Site, Cooling Tower, Fire Cleanup and other applications requiring high volume water dispersal. * Cast bronze pump housing for corrosion and rust resistance. * Oil filled motor housing for lifetime lubrication and rapid heat dissipation * Stainless steel screws, bolts, and handle. * Mechanical seals (stainless steel spring, nitrile parts, carbon and ceramic faces). * Nylon switch housing. * Thermal overload protection. * Manual operation * 1-1/2" Discharge