Fuchs Oxystar aerators from Kusters Water are suited for installation in oxidation ditches. The aerators are offered as self-aspirating or blower-assisted and can be easily installed into new or existing oxidation ditches. They are low maintenance and efficient, and eliminate surface spray. Replacement of existing brushes or vertical-style aerators is simple and cost-effective. 205/987-8976; www.kusterswater.com.