My old boat had a auto/manual switch that ran freshwater in or a auto/manual to recirculate the water. I always used the auto freshwater when fish were in the well and I only used recirculate when I was making a run so I wouldn't loose any water from the tank. I see there is no auto timer for fresh water on my V20 so how do you guys run your livewells to keep your fish alive? I didn't think it was good to recirculate the old used water over and over again fish puke, poop and pollute the water so bad you need fresh water don't you?