Abstract: A livewell system for installation on a marine vessel includes a tank configured to hold water, a lid configured to be secured over an opening at an upper end of the tank, and an overflow outlet located proximate the upper end of the tank. When the lid is secured over the opening and the tank is filled with water, an underside of the lid is configured to contact substantially an entire upper surface of the water such that substantially no air gap is present between the upper surface of the water and the lower surface of the lid. A hybrid aerator spray head and venturi fitting coupled to the tank provides oxygenated water into the tank.

Abstract: A livewell system comprises a tank for holding water and aquatic life. A scale measures a weight of the tank and any contents of the tank. At least one sensor determines a property of the water in the tank. A pump pumps water into the tank. A controller is provided in signal communication with the scale, the at least one sensor, and the pump. The controller controls the pump based on information from the scale and the at least one sensor. A kit for a livewell system on a marine vessel, including a scale and a measurement module in signal communication with a controller, is also provided.