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chemical cleaner for an old gravity system

maybemark Member Posts: 1,131
Is it best to actually use cleaners in my 100 year old pipes, or just flush it out several times before i put on my new HE boiler.
I did a ph test today on my water, but it might not be accurate .I have fish tanks, so i have ph tests, but it only goes up to 8.8. My piping system went to the top, so, good chance it's alot higher than that.
I live in chicago, and our water is 7.8 ph. Does the ph go high, with the debri in the water?


  • maybemark
    maybemark Member Posts: 1,131
    where do you pour the cleaner in your piping system?
  • maybemark
    maybemark Member Posts: 1,131
    I read, some people do not agree with chemicals, and others say to use it. What do you think? And, how do i install it in the pipes?