I cannot figure out what this white dot is between my aquarium glass

[Dnew99]

Woke up this morning and found 2 of these white dots between the glass. Fingernail does not catch on inside or outside. Not something that can be cleaned off and I don't remember them being there earlier. I almost want to say it's like a bubble.

 

[Lepisosteus]

Don’t often see double pane aquariums. Could be a variety of things between them

 

[skjl47]

Hello; Have you tried squeezing the glass from inside and outside at the same time over one of the dots?

 

[Dnew99]

Hello; Have you tried squeezing the glass from inside and outside at the same time over one of the dots?

Yes. Nothing happens. I think these bubbles have been here, this is just the first time I've noticed.

 

[skjl47]

Yes. Nothing happens. I think these bubbles have been here, this is just the first time I've noticed.

Hello; Well you will always see them from now on. Like a scratch on a car after you spot it. Does not sound structural.

 

[A201]

I have a similar very tiny transparent bubble in my Marineland tank. Its only visible under certain lighting. The tank has been up & running four years w/ no problems. I just wrote it off as a micro flaw in the glass. Likely no worries.