Aquarium structure question

[Unstoppable algae!]

I just noticed glass bonding material (maybe) getting close to the edge? This is the left side of my 150gallon aquarium.

I thought I remember hearing someone say this angle is a good way to tell if the glass is separating.. hope I’m wrong

Not Red Sea tank but sweating a little

(Please say it’s nothing)

 

[Unstoppable algae!]

Bump

 

[ScottJ]

@UncommonSense

 

[UncommonSense]

Oh, yikes!

It’s a bit hard to tell which side of this seam is silicone, and which side is air, but this looks less than ideal, to be honest…

Is this the only seam which currently looks this way?