anti lime solutions?

i love to keep my phx clean all the time and im an avid iso and salt cleaner. i used to use 420 cleaner which works just as well but i find iso and salt is cheaper and easier to find and less of a mess.

looking over everybodydoesit.com in the roor section they make a "anti-lime solution" it says "Because of our tap water being so hard, lime-deposits will gather with time on the surface of the glass. This results in the glass becoming dull and dirty.
We highly recommend using the Roor anti-lime solution periodically - good results will only be achieved if the pipe is cleaned before use."

i was hoping someone could help me out with this. 1) has anyone use any of this stuff? does it work? and 2)anyone know of a "homemade remedy" i could use with/after i clean with iso and salt?

it seems like the shaft of my glass bong (phx) is always what stays as they say "dull and dirty". id love to know if i should cash out for 10 bucks for anti lime solution or if i could make my own.

when I use formula 420 on my pieces, they shine like f-cking brand new :D
i think its acetone, i dunno... but I dont think its necessary to go farther then a normal cleaning.