John Holz of HAB Aquatic Solutions, Lincoln, Neb., feeds a hopper with granular alum and broadcasts the pellets in a channel Tuesday at Kozy Marina. The state will continue the second alum pilot study until Friday to gather data for future large-scale alum treatments on the lake.

GRAND LAKE - Kozy Marina manager Ted Goodwin watched as pea-sized alum pellets were broadcast from the front of a pontoon and into the Grand Lake channel near his family's business on Tuesday. Goodwin, and dozens of other busin . . .