Another picture from Glass Bastard, you can see all his pieces here: http://forum.grasscity.com/bongs-bubblers-water-pipes/1027999-glass-bastards-collection-thread-11.html Scroll to the end.
I picked one of these up over the weekend
http://aqualabtechnologies.com/scientific-glass/b-wilson/b-wilson-six-arm-bubbler-with-direct-inject-slide.html
I also use Salt and ISO with a rinse of hot water afterwards. No ill effects as of yet. I just started using Grunge Off and it cleans a lot better IMO.