my thinking would be this...
much much much easier to run a new bead of silicone on the inside of a watertight tank, than to repair the tank if the bond between glass begins to leak.
I'm looking for a watertight 90 cube. lemme know if you want to get rid of it!
No first-hand experience though. i would think that the corner bead of silicone would also protect the structural bond from damage from glass cleaning/scraping.
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