I just bought a 1988 starcraft bass -v-180. This is just like a tracker boat. I took it out today and thought if I leave the plugs out of the back of the boat the live wells will fill. I pulled the plugs in the live wells and water would only go the the lip of where the plug goes in at the bottom of the tank. It has 3 tanks. I turned on the aerator and the front take was filling but the other 2 tanks I got nothing. any ideas? I checked and there is not any kind of punp inlet like the front tank than was filling