in fact, i tried your suggestion and did the water-slamming-into-the-wall-of-the-T method, and left it overnight..but still hardly any bubbles in the T-line..i tried the one in the diagram above..and within minutes..i saw a whole slew of lil bubbles on the T-line!
somehow the one in the diagram works (MUCH) better for me..wonder whats up with that..
