Here's my res:
Click for a larger image.
It's an acrylic box 8"x8"x2-1/2". The inlets and outlets are near the bottom separated by a 3-1/2" tall divider. Very few bubbles make it from one side of the res to the other.
It's attached to a passive cooled radiator made of 3/4" copper tubing and copper fins.
View the Radiator Post Here: