My wife is on a mission and anyone that could help it would be most appreciated.Her problem is that the pipe from toilet to holding tank is black and she cant clean it . She has tried different types of cleaners and soft scrubs.She has tried brushes and hoses with attachments.This is becoming an obession with this and We are going to wait patiently for any and all responses.

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Comment by Pat Daly on September 13, 2012 at 11:51pm

There are over 40 discussions on this is Forums. Here's a link to some of them LINK


You can type any issue in the Search Good OLd RVS box top right and any prior discussions will come up.  Hope this helps.

Comment by Sam Green on September 13, 2012 at 8:27pm

Oooh, when that stuff sets up hard it can be like concrete.  I googled "Black tank cleaning" and came up with plenty of instructions on keeping the tank clean but nothing on dried caked stuff.  One site reccommended using rid-X but I have also heard not to use any thing real harsh due to damage on seals and such.  You might try the google and see if you can come up with something you haven't tried yet.  I know what you mean by obsession, my son-in-law gets upset with me because when I work on anything, I can't put it back together without cleaning all of the parts first.

Comment by stan franzone on September 13, 2012 at 6:15pm

Sam We Have a white pipe with black crud .tried alot of stuff .HELP!!!

Comment by Sam Green on September 13, 2012 at 4:34pm

Stan, I'm thinking that the pipe from the toilet to the tank is suposed to be black pvc type.  Are you saying that it is a white pipe with black crud all over it or could it just be a black colored pipe?  I hope that you are not insulted by my ignorance.  LOL



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