It will fill on auto, it should not fill when put on empty. When you want water and fish in the livewell- place the switch to auto. No fish, no water- put the switch to empty! I have a 13 as well, and this should work for you. On Auto, it doesnt fill all the way, use the pump in or aerator to fill up to the overflow, then use the recirc or aerator and their timers to keep your fish happy. Northern Basser-it sounds like they put your valve back in backwardsLast edited by mike dominick on May 29th, 2017, 8:10 pm, edited 1 time in total.