Originally Posted by
crustaceon
The top of the glass stops against the bottom of the plastic trim and has a bead of silicone that seals that joint. If that silicone is damaged, water sloshing around in the tank can find its way past. The good news is that it’s not really structural and you can probable fix the issue by temporarily lowering the water level for a day, cutting out the old “triangle” of silicone under the trim with a sharp razor blade and applying new silicone. Just make sure to not cut any silicone where glass meets glass.
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Good to hear it's not structural. Both you and Ray believe that. I will drop the water level, try to get a photo, and see if I can see any cracks in glass or silicone bead.
150g glass w/ corner overflow , 60g sump w/refugium, Eheim 1262 return, SRO 2000int skimmer, ATI Dimmable Sunpower 8x54w fixture, 2 Tunze 6105 and 2 tunze 6025 modded.