Rusty, I used a 8 inch long piece of 6" o.d. aluminum irrigation pipe which before being pressed into an oval held 1 gallon. Weld an .063 cap on both ends and you have a cheap tank that looks cool. Mine is pressurized with the overflow dumping overboard. But you could have a non pressurized version with a return line just as easily. You can get junk sections of this pipe from any irrigation outlet. I got the fittings from
C & R. Jerry

 

It’s not nice to pick on the welding challenged :-)   It it’s the last thing I do, I’m going to learn how to weld…

 

Thanks, but I was kinda hoping for one that was already made.

 

Rusty