Aquarium Silicone Seal Breaking?

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Melners

Aquarium Advice Newbie
Joined
Mar 26, 2016
Messages
7
Location
Manitoba, CA
Hi,

So I have a 20 gallon high tank that's been set up in the same spot for almost 2 years now. Since maybe a year this one spot on the silicone seal looked like it was separating from the glass, kind of an air bubble look. Very small. It used to go away when the water level was lowered but recently it's always there and has significantly lengthened up the seam and the original spot has turned white. When I press the glass some of the bubble disappears which has me seriously concerned that I should be deconstructing this tank before it spews 20 gallons of water all over the computer room floor.

I attempted to attach a picture of the seam in the thread but if it doesn't show I uploaded it here too:
Aquarium seal breaking? - Album on Imgur
nLDtA3J.jpg

Any advice would be greatly appreciated! I have a 5g quarantine running for emergency but I haven't set up my other 20g yet (currently being used as greenhouse lol).
 
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