Was given a beat up 33g that I used to hold rock. Cut the silicone out only leaving where the panes butted together. Cleaned really well then reapplied the silicone.
After reading how hard it is to take apart a tank even after the fillet cut out, figured the structural strength was still there from the original undisturbed butt joint and the new fillet would protect the first, plus help seal. Used it continuous for about 6 month, then a few times since without problems.
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