Hey Bing, Glad you're still around! Long time no see!
I built my bait tank with a 6 volt 12 amphour battery from batterymart .com It cost around $30 for battery and charger delivered. Used a 5 gallon bucket from home depot, an attwood pump, and a few connectors(Hose clips, male female wire connectors). Put on an outboard motor gas primer bulb so I don' have to suck to prime it! It works great. Went out for 6 hours last Thursday, 1 sardine died! It cost under$30 to build. You only need a drill. It took less than an hour to put together!
Save some bucks and keep it real! Piranha out!

:lol: 8)