Re: sticky residue when using citric acid. Is it possible that you
used citric acid that had sugar added to it? I was told to be sure,
when purchasing citric acid at the grocery store to read the label,
as some of it comes with either sugar or dextrose added to it.
I have used plain citric acid which I got at the local chemical
supply place, and it worked just fine with no sticky residue.
However, I have since switched to PH down, pool acid as it is so
readily available, and very reasonably priced. Alma