Hello Eric, I have heard that soaking the glass down with vinagar and then scraping with several new razor blades works. I guess the idea is not to let the blade get dull or you will scratch the glass. L.R.C. cleaner will work but it is toxic. You would have to keep it off the sealant. AND RINCE VERY WELL. Without knowing what you have tried already it's hard to suggest ideas. If this does not work let me know. And I will think about it some more. Sometimes the glass is just too bad to come clean. Good Luck, Sandy
Eric Johnson <etj@nwlink.com> wrote:
Hi. I'm about to set up an empty 55 gal tank my brother gave me. It has some
serious mineral/calcium deposits on it. nothing seems to be working. Any
miracle cures out there?