this post was submitted on 03 Jan 2024
28 points (96.7% liked)
Home Improvement
9023 readers
1 users here now
Home Improvement
founded 1 year ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
Copper carbonate -- it is greenish. The white stuff in the front is paint, I think.
It'll pick up some copper oxidation on brass fittings.