My shad clean-out tank and my bait tank both use 12v livewell pumps for aeration and filtration. I have a regular 120v 100 gallon aquarium filter that I also use while they're in the garage. I wanted a stable DC power supply to be able to use the 12v pumps in the garage or to supply the pumps when they're sitting in the boat or truck in the driveway while I'm getting ready to go fishing. I had a couple spare computer power supplies lying around and as I tripped over one I had an idea. Since the supplies I had put out 12v, 5v, and 3.3v DC, I figured they would be just the ticket for what I wanted to do. I did a quick Google search and found a couple of articles on how to modify the power supplies over to become basically a bench power supply. A trip to Radio Shack, $5, and an hour later I was in business. The attached picture shows the power supply. Lots of different ways to manage your output connections, but I chose to leave the wires so I could add different connectors for different devices down the road. In the pic I'm using it to run my sonar so I can clean up my waypoints and tracks in the garage instead of the boat. Some notes of caution should you decide to do this (I am in no way recommending that you do, only explaining what I did:wink: These supplies put out some current - the one in my pic is rated for 45A on the 5v side and 20A on the 12v side. Depending on the unit you use there are likely capacitors in the unit that will hold a significant charge after you unplug the power supply. Be very cautious when working inside the unit. As you can see from the picture, the cases on these units are very open to allow for cooling. Water and these things could lead to an unpleasant situation.