How to clean permanent ring out of bong?

[DirkZooDiggler]

Amazing.

I know....I think I would have fun cleaning with that thing....magnets are so cool

[tootsie roll]

420 cleaner..prolly the most basic glass/pyrex cleaner that you will find in almost any headshop

Exactly what I was going to suggest. :thumbsup:

[benagain]

Have you tried just regular purple power or scrubbing bubbles? I've bought some of those bong cleaners that are nothing more than shit you can get at walmart for half the price.

[TresLeches]

combine one of the liquids mentioned or hot water with uncooked rice. shake it up real nice...the rice will get most of it.