Got my first boat with a livewell last fall and I have a couple questions. The pump is on the transom and the hose runs up the side of the boat to the well. Its sprays in from the top. THere is a tube that comes up from the bottom of the well. I was assuming this was an overflow tube. Am I supposed to be able to keep the pump on? As it sits, I have to turn it off because if I leave it on, the well overflows into the boat. The tube empties out the bottom of the boat. Any ideas? Thanks!