So I have the smallest little spec of what looks to be orange or brown in color. About the size of a grain of salt stuck to the inside of my tube. I tried soaking in GO, doing a salt/iso shake and it still wont come off. I even took my bong buddy and tried to rub it off ever so slightly but it wouldn't come off. Is this a rust stain or something? I don't understand how it got on there in the first place(i use distilled water) It's really peeving me off because my glass is ALWAYS spotless. Has anyone else seen anything like this? And how did you get it off? I am not able to get anything into that spot to scrub it hard enough to remove it. How should I go about doing this?
Well if iso and salt didn't get it its gotta really be on there wich i could be a lil more helpful lol
Make a concoction of simple green,iso,salt or i seen some people use denatured alcohol,all in one. Maybe try some heavier salt like epsom salt.
Try using vinegar, I know it gets rid of hard water stains. I don't know if thats whats causing your problem though. You could try CLR but I wouldn't want to smoke out of that afterwards haha