My boyfriend lives in this old old house. Pre civil war. The upstairs bathroom has been out of use for years and he now wants to use it. Unfortunately the sink is coveted in a layer of Brown gunkIts hard, comes off in chunks or shards, and seems resistant to scrubbing. I have been pushing for soaking in CLR but instead it had been strayed with lime away in a spray bottle and it isn't working. What's next? via /r/DIY http://ift.tt/2qMQ2sc
