How To Build a Spray Bar Aerator for Bait Tank?

[mallardtone-man]

Hey guys, I have a large non working chest freezer that I am going to try and turn into a permanent bait tank. I have plans to seperate it with plexi glass, add an aerator and hopefully a filer system and cooling coil. I have very little experience with this sort of thing and could really use some help. I cannot afford to spend much on this thing but would really like it to be successful, I am sick of not being able to find big pike baits. I would like to use a spray bar aerator and was hoping someone might know how to build one for cheaper than can be bought from the factory. I have looked at them and they seem very simple, a water pump and a peice of pvc with holes drilled into it right? I am also completely lost about what to do for a cooling element and filtration. Can someone please point me in the right direction? Remeber, I am trying to keep my bait alive as cheaply as possible ;).

Thanks,
James