Pemble-Halverson, Inc W12291 820th Avenue River Falls, WI 540223 The Tour Our History The making of an OTAB FAQ Otabs release thousands of bubbles of oxygen when dropped into a bait bucket. These bubbles replenish the oxygen removed from the water by the live bait. The Otab will bubble briskly for hours. Under usual conditions, three dozen, one inch minnows require an Otab about every five to ...