05-13-2014, 09:52 AM
I use to have some info on a cooler design that was simply a long length of large diameter water pipe into which the air from the pump was fed before going into the tank. I cannot recall the name of it but it appears to have been around for a long time and people swear by it. If I can think of the name I'll let you know.
Hunting American dentists since 2015.