I made this out of a 6 gal Igloo Water Cooler. Pump installed in the bottom, inline filter in the back. Insulated, rolls easy, keeps bait alive all day. Total cost about $30 Materials: Igloo 6 Gal Beverage Roller Thru Hull Pump In-Line Filter 3/4" Flexible Tubing PVC Elbows, End Caps PVC Cement Unscrew and remove the water spout from the bottom of the cooler. Install 3/4" pvc sink drain in this hole. On the inside of the cooler is a 4" long pipe with drain holes drilled in it and end cap attached. This will keep the shad from getting sucked up. On the outside attach the flex tubing from the drain to the pump. Install pump in the bottom of the Igloo Beverage Roller. Run the flexible tubing from the outlet on the pump up the back side of the cooler into a in-line filter. This filter has a stainless steel 50 mesh reusable screen. Just unscrew it and rinse the filter as needed. Run the flexable tubing into the cooler top by drilling a 3/4" hole with a hole saw or spade bit. Use about 18" of the flexable tubing for the spray bar. I drilled about a dozen 3/16" holes at an angle, this will make the water in the tank rotate and keep the bait swimming and happy!