I too second piano wire or guitar strings. ive taken apart many tanks, and if your panes of glass are together real tight, when you try to get the razor blade in between the panes of glass, you chip the glass. something i wouldnt risk on a tank that size.
). Once you get the string in between the panes of glass wrap both ends of the string around a screwdriver handle or some thing similiar and tape it.. Then saw through the silicone.. Works like a charm
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