So I was cleaning my tank today and while taking the intake tube of the 70 off to scrub, the u-tube nub (controls the flow control) snaps right off. :madrant
Then I took a wooden dowel in my art drawer and stuck it into the hole that was created after the piece went flying. PERFECT FIT!
I slapped some crappy hot-glue work on the seams afterwards and its back on the job.
Lesson: The AC baby's are tough!
Lets hope that the filter doesn't break down again before my DIY job does.