On Thu, 24 May 2012 12:54:18 -0700, so wrote:

The little filter with the tube sucks

I just found a picture of the setup:
http://www.poolcenter.com/parts_filt...tem3_cartr.htm

It lists that little tube as part #8 & #9 as listed below:
#8 WC8-126Z ZPEN0376 Sta-Rite Filter Air Bleed $9.89
#9 25021-0003 ZPEN0105 Air Bleed Tube $6.47