RE: 3 line tanks - 3rd line bend tubing or use tubing with clunk?
I really like the idea of a "molded in" third line. Have you ever seen those new containers that moter oil comes in? It has a little vent molded into the neck, I don't see why some tank Mfgr could do something like that.
Hey Marc, there's a good idea, you should pitch it to Sullivan et.al. and call it the RCU Tank!