Re: Automatic and manual aerator switch for livewell.
Automatic mode pumps fresh water into the tank. That keeps the water temperature stable and provides oxygen to keep your fish fresh. As for when to use manual, I don't do it when I first go out because it's just adding unnecessary ballast/weight to the boat. Once/If I catch that first fish, I turn the livewell pump on since it only takes 10-15 seconds to get enough water in there for the fish to breath.
Do be careful about draining your livewell. Some states have rules stating that fish cannot not be transported from a lake in your livewell. Some states also have laws prohibiting you from leaving water in there because of the threat of introducing invasive species into bodies of water.
