Originally Posted by tamicatana
y'all might want to check the year this thread was actually in debate...
Good catch on the date because I just read the entire thread with fascination and missed that it was old.
Being a freshwater sailor I did not even know this issue existed until we got to Germany
(about a year in salt
water) and the head became plugged due to narrowing by the scale. This happened to us in 2011.
We purchased a gallon of muriatic acid and applied several high potency treatments (diluted it 1/2) letting it marinate in the plumbing
. Lots of bubbling and gas at first. Loose scale came out. Not so much on the second treatment. I moved it slowly through the system during application.
I knew how to do the mixing from college days (chem major also) add the acid to the water
to minimize the splash danger
. I put on a swim suit and a dive mask (eye protection) to mix this stuff on the dock
and to put it in the head. It was 40 or 50% concentrate to start with.
with vinegar and we never had another problem.