OK I built a bait holder out of a 55 gallon barrel. I have the 12 volt pump hooked to it and runs great. Really keeps the bait alive. The problem I have is that I have the pump hooked to my battery charger and it works great but I want something more permanent. I tried a 12 volt power supply but it got to hot. Any one have any ideas what I can use it needs to be on 24 hours about 4 to 5 days