Hog Head Posted September 29, 2011 Share Posted September 29, 2011 I need to clean what appears to be calcium/mineral build up off of the glass on my new to me 150gal tank. This is a milky film that I can't scratch with a fingernail. Epic1 scraped the coraline off but this film is left. I planned on using a green scoth brite pad and a razor blade and the the acid to get what was left. Will the Muratic acid affect the silicone? Thanks, Eugene Quote Link to comment Share on other sites More sharing options...
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