Cleaning my bong

I use salt and iso alcohol. Sometimes I use some CLR after I get the resin out. Try using some CLR then clean it again.Sent from my Amazon Kindle Fire using Grasscity Forum mobile app

 

Isopropyl alcohol + kosher salt (larger grain than table salt.) Both are cheap and chances are at least one is already in your home.
 
It'll work wonders; your post reminded me I was going to clean one of my pieces today, so I just did and too a few pics to show how well it works:
 
Percs just after I poured some alcohol in:

 
Added a few tablespoons of the kosher salt and poured in some more alcohol to get the salt past the splash guard:
 

 
Sealed off both ends with some plastic wrap and rubber band, and shook the pipe (very carefully) for about 2 minutes:
 

 
Spotless 
 
About a Z went through this piece since the last time it was cleaned.
 
Be sure to use 90% or greater isopropyl alcohol or it'll be a pain in the ass to get your piece clean. 

 

iso and salt, 100% acetone (not nail polish remover, competely different), simple green, grunge off, oxyclean...theres a few more but there are plenty of options and price ranges as well.

 

I promise you this method will make that tube shine like the day it was bought. Get a plug for the down steam (I like to use a glass 14mm plug, push it down lightly and twist, the glass on glass seals nice) buy two bottles of grunge off, pour in, carb the plug a tiny so the grunge fills the down steam, let sit for an hour and a half for seriously dirty pieces, an hour for decently dirty, and half an hour for weekly cleans. I keep my tubes clean in a display case and smoke about 7g through each every week, clean 2x a week and they always look good and arent too hard to clean after the initial cleaning.