I have a takamine g350 acoustic-electric guitar (not that it really matters for this quesiton), and my strings tend to break every two or three weeks. I do like to experiment with different tunings, so I'm tightening and untightening the strings constantly. Also I think my fingers are very acidic, and my strings corrode seemingly very quickly (little brown spots, rough.... sound like corrosion?). Is there any type of string I can use/techniques I can put into practice that will help with the breaking of my strings?
Thanks!