Anyone seen Black silicone turning yellow before?

[jsvand5]

I’m really hoping this doesn’t become an issue. My first Aqueon 210g started failing a few weeks after install so I may just be overly paranoid, but this one has been set up for a few months now and I just noticed this. It’s in the bottom front corner. I know for a fact it wasn’t like this at setup. It appears to not be at the actual structural seam and just one the overlap area but it’s still a bit concerning to me after my last experience.

 

[virtual reality]

I have seen it once. When a bleach cleaning in a tank turned it that color.

 

[Mastiffsrule]

Should be fine. Just discolored

 

[jsvand5]

Should be fine. Just discolored

Sure hope so. I definitely can’t go through pulling this tank down again. Just concerns me that it happened since the tank was set up. It definitely looked perfect a few months ago.

No bleach was ever used.

Well hopefully if it fails at some point it will be a slow leak. 210g will definitely cover a lot of area.