The hand-held power agitator from Crust Busters has an 80-inch shaft and two- or three-blade propeller designed to mix a 1,000-gallon septic tank in five minutes. Options include 2-, 4-, 6- and 9-foot extensions, and a short three-blade shaft that adapts to the two-blade unit. 763/878-2296; www.crustbusters.com.


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