090919 4342 Wells Enterprises Inc. has signed a purchase agreement with Eden Creamery, to acquire Halo Top, a low-calorie brand of ice cream. The sale is expected to be completed in September. The move is the latest in a series of acquisitions by the Le Mars-based family business as it pursues its longtime goal of becoming the nation's leading ice cream maker. Storm Lake and Sergeant Bluff voters will have a chance to approve or reject school bond issues tomorrow. School officials say enrollment