Re: Live well
Since you didn't indicate what type of boat you have, and since there a dozen different ways a live well can operate, I can only explain it this way:
1: On the console you should find a switch that says "Live Well". That switch turns on a pump that fills the live well.
2: The switch may be labeled "MANUAL/AUTOMATIC". In the manual position the pump runs all the time. When the tank is full, excess water simply runs out an overflow line through the side of the boat. In the automatic position the live well pump may run for 30 seconds and be off for 3 minutes and in some cases, that time may be adjustable. The idea is to set the switch to manual to fill the tank. Then switch to auto.
3. Most live wells have plug in a hole at the bottom. The plug must be installed to keep the water from running out. To drain the live well pull the plug.
4: Some live wells use a "stand pipe" that fits in the drain hole. That pipe works like the pipe in your toilet tank at home. Excess water simply runs over the top of the pipe and out the drain.
5: Some boats use a series of valves to control recirculation of the live well water. Some do not. Some use a series of valves to control filling and emptying the live well.
6. The ideal of frequent operation (aeration) of the livewell is to keep the water oxygenated so fish stay alive.